The least rainfall, drought, and extremely poor feng shui.

Pineapple is one of the four famous fruits in Guangdong. Originally from Brazil, 1558 was introduced to Guangdong. Mainly planted in the Pearl River Delta, Chaoshan area and Leizhou Peninsula, the development was slow, until the total output of the province was only about 2000 tons from 65438 to 0949. After the founding of the People's Republic of China, especially since the reform and opening up, with the development of processing industry, Guangdong pineapple production has developed. 1993, the planting area of the whole province was 289,200 hectares, and the total output was 2 1. 1.6 million tons, which were 2 1 times and 1.03 times higher than that of 1949 respectively. Mainly distributed in central and southern China, Zhanjiang and Jieyang alone account for more than half of the province's planting area, accounting for 75% of the province's total output. 1. requirements of pineapple growth and development on meteorological conditions pineapple is a tropical perennial herbaceous fruit tree, which likes warmth and humidity, avoids low temperature and frost, and has strong drought tolerance. However, good growth and development need sufficient water, and the rainfall is insufficient or excessive or uneven, which should be adjusted by irrigation and drainage. Pineapple is native to tropical rain forest and tropical plateau, which has strong shade tolerance, likes diffuse light and avoids direct light, but it still needs sufficient light for high yield and high quality. Pineapple is widely used in soil, but it is not suitable for neutral or alkaline soil, sticky or unstructured silt, and requires pH 5 ~ 6. Pineapple plants are short and less damaged by wind, but strong winds above level 6 can also cause damage. Temperature is the most important ecological factor affecting the growth, yield and quality of pineapple. According to the research, pineapple can grow at 15 ~ 40℃, the most suitable temperature is 28 ~ 32℃, 10℃ grows slowly or stops, 1 ~ 2 days will cause chilling injury below 5℃, and 1 ~ 2℃ will survive for too long. Compared with other tropical herbaceous fruit trees (such as bananas and papaya), pineapple is more tolerant to low temperature and short frost. Different pineapple varieties have different responses to temperature. They don't bloom when the average temperature is about 65438 03℃, but they begin to bloom at 65438 06℃. Drought and heat can also inhibit flowers from opening or lead to incomplete flowering. The maturity and quality of fruits are also closely related to temperature. From germination to maturity, the average temperature increased by 65438 0℃, and the maturity days decreased by about 5 ~ 8 days. If the temperature is high, the sunshine is strong, the moisture is sufficient, the maturity is short, and the quality is good. Therefore, generally, summer and autumn fruits have shorter maturity and better flavor than winter and spring fruits. Pineapple is a drought-tolerant crop. According to the research, the daily evapotranspiration of pineapple is about 4.5 mm. Even if the original water content of the soil is relatively high, as long as there is no precipitation for 3 ~ 4 weeks, the water in the soil can be exhausted. Therefore, proper water supply should be paid attention to during the growth and development of pineapple to ensure its normal growth and development. However, pineapple is an aerobic crop with shallow roots. Too much water and too high soil humidity will cause poor soil ventilation, hinder nutrient absorption and utilization, and seriously cause root rot and death. According to reports, places where the annual rainfall is above 1000 ~ 1500 mm and the precipitation time distribution is relatively uniform (the monthly rainfall is 100 mm) are more suitable for pineapple growth. The groundwater level of 30 ~ 50 cm is beneficial to root growth. Short-term drought in autumn and winter is beneficial to flower bud differentiation and enhances plant cold resistance. However, if it is too dry, the plant will turn yellow, the fruit stalk will dry up, the fruit core will crack, and it will also lead to early maturity, small fruit, not full, pale pulp, less water and poor flavor, which will induce wilting disease and reduce production by about 20%. If winter and spring are cold and dry for a long time, the cold resistance of plants will be reduced, which is not conducive to flower bud differentiation, bud dysplasia or even stagnation. Therefore, when the monthly rainfall is less than 50 mm, irrigation is needed to replenish water. April to September is the rainy season in Guangdong, with frequent rainstorms and frequent floods due to poor drainage. Serious soil erosion is prone to occur in mountainous areas. Therefore, it is necessary to do a good job in the drainage and irrigation project of pineapple orchard, and pay attention to water storage and soil and water conservation. Although pineapple was originally grown in the semi-shaded environment of tropical rain forest, it is sensitive to the requirements of light after long-term artificial domestication and cultivation. The intensity and quantity of light directly affect its growth, yield formation and quality. Proper illumination can increase yield, improve quality and flavor; Due to insufficient light, the leaves become slender, the fruit is small and the seed setting rate is low. It is reported that if the natural light is reduced by 20%, the seed yield of pineapple without thorns can be reduced by 10%. Pineapple likes diffuse light, but is afraid of direct strong light. In summer, high temperature and strong light will make its leaves turn red and yellow, and the buds and fruits will be easily burned by the sun, reducing production by 3 ~ 5%. Therefore, sun protection and sun protection measures should be taken. In a certain height range, with the increase of altitude, the diffuse light decreases and the ultraviolet intensity increases, which will inhibit the growth of pineapple. According to the experiment, under the sunny slope with a slope of 22 degrees, the diffused light exceeds15% of the horizontal plane; Under the same slope, the diffuse light on the south slope is 4% more than that on the north slope. Therefore, the fruits on the south slope with the same height ripen 7 ~ 10 days earlier than those on the north slope, and the quality and color are better. The wind with wind force less than 3 is beneficial to the growth of pineapple. Summer breeze can strengthen turbulent exchange in the surface layer and increase the evapotranspiration of pineapple, thus regulating the temperature of the surface layer and crop population, promoting root absorption and material circulation in the body. The winter breeze will hinder the formation of frost. However, strong winds above level 6 have a great influence on pineapple, which will break the growing fruit or cause the plant to lodging, thus affecting the growth and development. 2. Climate regionalization and rational distribution of pineapple In order to rationally develop and utilize Guangdong's climate resources and develop pineapple production according to local conditions, Guangdong is divided into four regions: the most suitable region, the suitable region, the sub-suitable region and the unsuitable region from the perspective of agricultural climate. The performance of pineapple in each suitable area is: (1) The most suitable area: no chilling injury, good growth, big fruit and high quality, which fully shows the superior species, high quality and stable yield of each variety. (2) Suitable area: Generally, there is slight chilling injury all year round. Bundle leaves can safely overwinter under cold conditions, with good quality and basically stable yield. (3) Sub-optimum area: There is frost in most years, so it is necessary to prevent cold and overwinter seriously, and the fruit quality is normal and the yield is unstable. (4) Inappropriate areas: frequent and severe cold damage. Usually, simple field cold protection can't survive the winter safely, and it doesn't have the conditions for commodity production in the open field. Judging from the ecological factors and climate of pineapple, the most important thing is temperature. At present, it is difficult to artificially create temperature to meet its needs, so the climate division of pineapple is based on temperature. I: The most suitable area for southern pineapple includes all areas from the south of Huilai, Lufeng, Haifeng, Huidong, Baoan, Zhuhai, Yangjiang and Xinyi to the north of the southern tip of Leizhou Peninsula. The maritime climate is obvious, and the terrain is conducive to pineapple wintering. The eastern part is blocked by Lotus Mountain and the western part by Yunkai Mountain, which plays an important role in weakening the cold air in winter. The terrain is conducive to the discharge of cold air, and the heat conditions in winter are good. The annual average temperature is 2 1.7-23.3℃, the most Leng Yue average temperature is 1.3- 1.4℃, the monthly average extreme minimum temperature is 1.4-0.3℃, and the annual extreme minimum temperature is-1. This area is convenient for transportation and marketing, especially for domestic transportation in the north. There are also canning processing and beverage factories, and there is also a lot of land available. It should be an important commodity production base for pineapple production and an important base for pineapple industry in Guangdong Province, and it is one of the most qualified areas for producing spring pineapple in Chinese mainland. However, spring drought and sunburn are unfavorable factors that should be overcome in production in this area. Ⅱ: The suitable area for pineapple in central and southern China includes all areas from the north of Zone I to the south of Raoping, Chaoan, Jiedong, Huiyang, Zengcheng, Guangzhou, Heshan, Kaiping, Yangchun and Xinyi. The eastern part is mainly the Hanjiang Delta Plain, which is located in the southeast of Lianhua Mountain Range. The terrain is relatively open. Cold air is easy to spread to the sea in winter, and the temperature is high in winter. Except for 2-4 frost days in some areas, there is only light frost in most areas. The central part is mainly located in the Pearl River Delta, with flat terrain and dense water networks. It is suitable for pineapple growth in summer and autumn, but the cold and rainy weather lasts for a long time in spring, and pineapple is often subjected to different degrees of chilling injury. The heat conditions in winter in the west are also good, but Enping and Yangchun are one of the rainstorm centers in this province, so attention should be paid to the construction of irrigation and drainage system to prevent waterlogging. The annual average temperature in this area is 2 1.4-22.4℃, the most Leng Yue average temperature is 1.2- 1.4.6℃, the monthly average extreme minimum temperature is 1.9℃, and the annual extreme minimum temperature is-1.9. There are many hills and mountains in this area, which can be used, and industries are developing rapidly, with strong consumption level, convenient transportation and superior conditions. Develop high-quality fresh food varieties, develop quick-frozen pineapple slices and concentrated pineapple juice for export or domestic sales, and form a pineapple industry with regional characteristics. Ⅲ: Central China Pineapple Sub-optimal Zone includes all areas from the north of Zone Ⅱ to the south of Fengshun, Jiexi, Liuhe, Boluo, Zengcheng, Conghua, Qingxin, Sanshui, Gaoyao, Yunfu and Luoding. The annual average temperature in this area is 2 1. 1-22.0℃, the most Leng Yue average temperature is12.2-14.1℃, the monthly average extreme minimum temperature is 8.3- 10.5℃, and the annual extreme. Pineapple can be harvested when planted, but the lack of heat in winter and low temperature frost pose a great threat to pineapple overwintering, and the yield or quality are not ideal, resulting in poor economic benefits. Therefore, this area can only choose favorable terrain to avoid the cold, which is not suitable for large-scale development. Ⅳ: The unsuitable area is located in all areas north of the northern boundary of Zone III. In winter, the temperature is low, the annual average temperature is lower than 265,438+0℃, the annual cumulative activity temperature is more than 65,438+00℃ and less than 7500℃, and the frost days are more than 5 days. Pineapples have a hard time in winter. Even if planted in a small terrain to avoid the cold, the yield is extremely low, the quality is extremely poor, and there is basically no economic cultivation value. Thirdly, there are some problems in pineapple production and technology. There are many favorable conditions for developing pineapple production in Guangdong, which are the most suitable climatic conditions for pineapple growth. There are many mountains and hills that can be reclaimed and utilized. As a perennial fruit forest, intercropping crops is rich in available land resources. Good sales prospects; Strong processing ability of canned pineapple and juice; Good economic and technical conditions and high economic benefits. However, there are some problems that need to be solved urgently in pineapple production. The first is extensive management, low output, low total output and poor quality. Therefore, in the future, we should vigorously promote the technological transformation of pineapple, popularize the knowledge of scientific pineapple planting, greatly increase the output of pineapple, reduce the cost and improve the efficiency. Secondly, the production period is too concentrated, which leads to the backlog of products and reduces economic benefits. According to the characteristics of commodity production, we should make full use of the climate differences in different regions of the province, arrange different variety structures and fruit harvesting periods, and extend the supply period of pineapple fresh fruit. Third, the planting layout is unreasonable, and the frost in winter is serious, resulting in large-scale production reduction or no harvest. Therefore, it is necessary to adjust measures to local conditions and plant them in the right place, so as to achieve early fruiting, high yield, stable yield and high quality to the maximum extent. Get high returns with the least investment, thus accelerating the development of pineapple production. Fourthly, due to the fierce competition in the international market, the quality of canned pineapples in our province is poor, and the export drops sharply, which affects foreign exchange earning. Therefore, we should do the following work well: (1) Pay attention to variety optimization and renewal, product quality and comprehensive utilization. (2) Actively improve processing technology, expand processing equipment, and improve the quality of canned food and fruit juice. (3) Further improve the transportation and packaging equipment and enhance the competitiveness of products in domestic and foreign markets. (4) Rational layout, scientific fruit planting, adjustment of mature season, and more production of spring pineapples to meet the international market demand. Good answer! Unfortunately, there are no pictures.