1. Soil preparation and fertilization: Organic fertilizer is the main fertilizer. Generally, 2000 kg of decomposed organic ferti
1. Soil preparation and fertilization: Organic fertilizer is the main fertilizer. Generally, 2000 kg of decomposed organic fertilizer, 75 kg of cake fertilizer, 40 kg of compound fertilizer and 80 kg of plant ash are applied per mu. 2. Ditching: Deep furrows and high furrows are used for plastic film mulching cultivation. Generally, the ditch width is 100 cm, the ditch height is 20 cm and the ditch width is 25-30 cm. 3. Seeding and seedling raising: the seedbed is prepared before sowing, and the culture soil on the seedbed is mixed with organic fertilizer and scarification.
First, the planting techniques of open-field zucchini
1, soil preparation and fertilization
(1) When applying fertilizer, organic fertilizer can be the main fertilizer, and 2000 kg of decomposed organic fertilizer, 75 kg of cake fertilizer, 40 kg of compound fertilizer and 80 kg of plant ash can be applied per mu.
(2) Spread the fertilizer evenly on the ground, then turn it 30 cm deep, and then level the ground.
2. Abandon the whole border
(1) The cultivation mode of deep furrow and high ridge plastic film mulching can be adopted. General frame width 100 cm, frame height 20 cm and groove width 25-30 cm.
(2) Before film mulching, the border surface must be leveled again and sprayed with herbicides. When covering the film, it should be tied tightly and covered flat, so that the film can be closely attached to the frame, and the periphery of the film should be compacted with soil.
(3) After the border is covered with plastic film, 45% chlorothalonil fumigant 1 kg can be used per mu before planting, which is beneficial to disinfection.
3. Sowing and raising seedlings
Seedbeds must be prepared before sowing. The culture soil on the seedbed can be mixed with organic fertilizer and loose soil, and then appropriate amount of calcium phosphate and plant ash can be added.
(2) When sowing, you can pour enough water on the seedbed to make the soil fully wet, then put the seeds on it at a certain spacing, and ensure that the germination end of the seeds is facing down, and then cover the soil shallowly.
Step 4 plant
(1) Zucchini is usually planted in mid-March. When three leaves or four Ye Gang of 1 are unfolded, the seeds can be planted in about 30 days.
(2) small varieties can be pressed by 40? 40 cm double row planting, planting about 1800 plants per mu, large varieties according to the plant spacing of 50? 50 cm double row planting, planting about 1600 plants per mu.
(3) Water the seedbed 1 day before sowing, select strong and good seedlings, and transplant as much soil as possible. When planting, the roots must extend normally. After planting, root water can be poured and the planting hole can be sealed with fine soil. After that, water can be poured 1 time every day until the seedlings survive.
Second, the management technology of open-field zucchini
1, water and fertilizer management
(1) Zucchini likes humid environment. After planting 1 week, the seedlings should be watered and properly fertilized, mainly urea or farmyard manure.
(2) The water content should be controlled well before the plants sit on melons, so as to promote the root development of plants and improve the rate of stable melons.
(3) Top dressing should be done when the plant sits on the 1 melon. The fertilizer is mainly available nitrogen fertilizer, and the top dressing per mu is about 15kg. At the same time, when the pumpkin enters the vigorous growth period, it should be watered well.
Step 2 control the temperature
(1) Zucchini likes warm climate, and its cold tolerance is not strong. Therefore, heat preservation must be done well before delaying seedling raising, and the temperature should be controlled at 28? C or so, and the temperature is controlled at 14 at night? C.
(2) After successful seedling slow-release, the ventilation in the field should be strengthened, and the temperature should be reduced appropriately, and the daytime temperature should be controlled at 22? C or so, and the temperature is controlled at 12 at night? Around C.
3. Artificial insemination
(1) The flowering rate of natural pollination of zucchini is relatively low, so artificial pollination must be carried out at the initial flowering stage to improve the seed setting rate of zucchini.
(2) In the morning of the second flower, you must pick the male flower, remove the corolla to expose the male stamens, then smear the stamens on the stigma, and finally smear a little ethephon solution on the pedicel of the female flower with a brush.
(3) When carrying out artificial pollination, we must do a good job of thinning flowers and fruits. Only/kloc-0 melon needs to be left in the axil, and other melons must be removed in time.