First, fertilizer and water management and fertilization: Flowering period is the fastest growing rapeseed, the period of the greatest demand for water and fertilizer, this time should be combined with the fertility of fertilizer conditions to meet the needs of rape growth and development. Dry land combined with rainfall, water combined irrigation generally 5-10 kilograms of urea topdressing, poor fertility conditions, growing weaker plots can be appropriately increased the amount of fertilizer, growing more prosperous plots to reduce the amount of fertilizer to prevent lodging. During the fruit phase, foliar fertilizers can be applied according to the growing conditions of the field. Generally, 2% urea and 0.3-0.5% potassium dihydrogen phosphate are used for foliar spray to increase the grain weight and oil content. Generally, it is sprayed every 7-10 days. One time, continuous spray 1 or 2 times.

Watering: For lands with irrigation conditions, watering irrigation should be carried out according to the growth of rape during drought. The final flowering time is recommended to be watered once to prolong the flowering period and increase the rate of rape and seed setting of rape. Due to the higher rapeseed plants in the later period, the wind is prone to lodging, so the amount of irrigation should be controlled, not too much, to a small number of times, generally about 40 cubic meters of watering acres.

Second, auxiliary pollination

In the flowering period, the soil should be kept moist, and artificially assisted pollination should be performed every 2 to 3 days for the flowering period using pull ropes, several times before and after. (Time is 8 to 10 o'clock in the morning.)

Third, pest and disease control

Disease prevention and treatment: After the rapeseed enters the final flowering period, powdery mildew is prone to occur in areas where there is more rainwater, and low-lying, high-humidity, and over-sized fields are more serious. 40% of Fuxing EC can be used for prevention and control, 8000 to 10000 times, or 25 % Triadimefon wettable powder 1500-2000 times spray. Occurrence of sclerotinia and downy mildew may occur occasionally. Sclerotinia prevention and treatment may use 25% carbendazim WP 150-250 g, or 40% sclerotium net WP 100-150 g, or 50%. Procymidone (Sulfacin) WP 35-50 g water spray; Downy mildew control can use 75% chlorothalonil 100 g, or 70% mancozeb 100 g, or 66.5% propamocarb ( Precise) water agent 50-75 ml, or 58% metalaxyl manganese zinc 150-175 g, or 64% anti-virus WP 120-150 g water control.

Insect pest control: The rape in the late growth period of the rape is prone to be aphid damage. It can be used to control 40% Leko cream 1000-1500 times, or 50% 2000 times, or 10% 2000-3000 times of Imidacloprid wettable powder. Liquid spray.

Fourth, timely harvest

Rapeseed is infinitely inflorescence, flowering lasts for a long time, and the maturity of pods is very inconsistent. It should be controlled at 70%-80% of the whole plant yellowing, and the pods should be harvested from light yellow to waxy yellow, so as to prevent cracking and shattering. loss. After the harvest, stacking for at least 5 to 6 days for post-harvest, in order to improve the quality of rapeseed, increase the oil rate. After threshing, the rapeseed is fully dried and stored at low temperature.

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