The minimum temperature for rapeseed germination is 3-5°C. The soil moisture during the emergence period should be maintained at about 65% of the field water capacity. The time for rapeseed planting is early to mid-September. Mix 1 kilogram of borax, fire ash and rapeseed evenly, spread it, and cover it with fire ash.

Before cultivating rapeseed, you should first dry the seeds in the sun, which can have a good sterilization effect. After drying, soak them in warm water at about 30°C for 4 hours. Spread into the soil.

Rape planting conditions

1. Temperature conditions: The lowest temperature for rape planting and germination is 3-5℃, while the optimal temperature during the flowering period is 14-18℃, and the optimum temperature during the silique development period is 14-18℃. The optimum temperature is 12-15℃. Planting can be carried out only after these conditions are met.

2. Moisture conditions: During the germination and emergence stage of rapeseed planting, the soil moisture should be maintained at about 65% of the field water capacity. During the budding stage and flowering stage, the field water capacity should be between 75 and 85%. During the silique development, During the period, the field water capacity should be between 70 and 80%.

Rape planting technology

1. Select varieties: Choosing good varieties is the key to high yield of rapeseed. The varieties are required to have high yield, high quality, high resistance and other characteristics, such as Zhongshuang 11 Rapeseed varieties such as No. 9, Hua Za No. 9, Chang Za You No. 2 and No. 3.

2. Land preparation and fertilization; choose land with loose and fertile soil, easy drainage and irrigation, and relatively flat terrain. Before sowing, the seedbed must be carefully prepared. According to every acre of farmyard manure, 1.25 tons of decomposed pig and cow dung and 20 kg of ammonium bicarbonate should be used. , 25 kg of calcium magnesium phosphate fertilizer and 6 kg of potassium chloride, mix well and compost for about 10 days, and use it as a base fertilizer for the land in conjunction with seedbed preparation.

3. Timely sowing: Rapeseed sowing time is in early to mid-September. Mix 1 kilogram of borax and fire ash per acre with the rapeseed seeds, spread them evenly, and cover them with fire ash. That's it.

Key points of high-yield management of rapeseed

1. Fertilization management: High-yield rapeseed requires heavy application of base fertilizer and sprout fertilizer early and in sufficient amount. In addition, dihydrogen phosphate can be sprayed on the leaves. Potassium, amino acid-containing foliar fertilizers, boron fertilizers, etc. can promote normal growth and development, improve plant stress resistance, and prevent premature aging.

2. Pest and disease management: The diseases that are most harmful to rapeseed mainly include sclerotinia, downy mildew, etc. If the plants are too densely planted, the yellow leaves need to be removed. This will facilitate ventilation and humidity reduction, reduce diseases, and also Appropriate amounts of pesticides can be sprayed to achieve optimal results and increase yields.