Rape after spring management

First, early application of manure from the growth characteristics of rapeseed after spring, early application of manure can increase production by about 20%. Fertilizers should be applied just after budding in the spring. If it is 15 to 18 centimeters high, it will be late. Fertilizer absorption has a process, and when rape grows quickly, it needs to supply nutrients in time. The amount of fertilizer depends on the specific circumstances, generally at the end of the foot fat, Miaofei more, Miao color good to be stable, on the contrary, to the amount of more than Shi, so that fat enough hair fat. Its application rate can account for 15% to 25% of the total fertilizer, and generally 5 mus of urea.
II. Irrigation Drainage rape has a long period of growth and consumes large amounts of nutrients. For each growth period, the seedling leaves are small, the transpiration is small, the temperature is also low, and the daily water consumption is also small; in the flood season, the growth is flourishing, the leaf area is increased, the physiological activity is strengthened, the temperature is gradually increased, and the transpiration effect is increased. The daily and daily water consumption also increased correspondingly; the flowering period was more vigorous and the temperature continued to increase, and the water consumption was also large. In northern China's winter rapeseed production areas, spring drought often occurs.
Third, the prevention and treatment of disease in the early flowering period to the full bloom of the onset of disease, available 40% of the sclerotium net wettable powder 1000 to 1500 times liquid, or with 3% of sclerotium powder spray. 50% thiophanate WP 500 to 1000 times, or 50% carbendazim WP 500 to 1000 times can also be used for control.

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