The main reasons for the three seasons of rice in Hainan are high heat, fast rice growth and short cycle in Hainan Island. Hainan Island, located at the edge of the northern tropics, has a tropical monsoon climate and is known as the "natural greenhouse".
There is no winter in summer here. The annual average temperature is 22~27℃, and the accumulated temperature greater than or equal to 10℃ is 8200℃. The coldest January temperature is still 17 ~ 24℃, with annual illumination 1750 ~ 2650 hours and illumination rate of 50% ~ 60%. Hainan Island is an ideal breeding base in South China because of its early spring, rapid temperature rise, large daily temperature difference, frost-free all year round and warm winter.
Extended data:
Types of rice varieties in Hainan Province:
65,438+04 new rice varieties are: Bo Ⅱ Youzhen Simiao, Bo Ⅱ You 3050, Bo Ⅱ You 665,438+09, Bo Ⅱ Youtaizhan, Guangxingyou Zhan Qing, Guang 8 You 5335, Ye Xiang You Xinhua Zhan, Guang 9 You Zhan Qing, Teyou 889 and Teyou 93,065,438+0.
According to the technical personnel of Hainan Seed General Station, these new varieties are indica rice, which were selected by scientific research units in Hainan and scientific research units and enterprises outside the province. After two or three years of field experiments, the high yield, adaptability, stable yield and stress resistance all meet the variety standards of rice variety approval in Hainan Province, which is suitable for popularization in Hainan.
Baidu encyclopedia-rice
People's Daily Online-Hainan 14 New Rice Varieties Obtained the "Pass" for Planting.