Rape winter and spring drought response plan

Drought hazards may occur in various regions of rapeseed during autumn, winter and spring. Autumn is a critical period for sowing seedlings and maintaining seedlings. In this period, drought will lead to difficulties in sowing and the planting area will be reduced. The seedlings of the live seedling will grow slowly and the emergence rate will decline. Not only the density cannot meet the requirement of high yield, but also the individual development is poor and transplanted. The rapeseed was slow to return to green and was growing poorer years ago. Winter is the flower bud differentiation and vegetative growth period of rapeseed. In this period, it will lead to significantly less branching and flower bud differentiation, shorter flowering period, and lower number of pods per plant. Spring is the period when rapid rape and fertility grow. When it encounters drought, the contradiction between vegetative growth and reproductive growth will increase and the flowering period will be shortened. Moreover, the difficulty of boron absorption will lead to “flowering but not realizing” and the yield and oil content will be reduced significantly. . To mitigate the effects of drought, the following countermeasures can be taken.
Select suitable cultivation period and density of crops that are prone to fall drought and have no irrigation conditions. Use nursery and transplanting methods as a priority, and select suitable transplanting time according to the weather. If the transplanting period is postponed, the transplanting density can be gradually increased within the range of 8,000 to 12,000 plants per acre. If live broadcasting is used, basal fertiliser can be pre-grounded and planted before the rain. If the sowing date is postponed, the planting amount can be gradually increased within a range of 0.25 to 0.35 kg per acre.
Irrigation and drought prevention at any time focus on the weather forecast, irrigation drought, and timely discharge of stagnant water to prevent rot. Workers can weed loose soil after irrigation to prevent soil compaction and moisture retention.
Straw returned to the field after transplanting 400 kg of rice straw per acre after the planting. The live field covers 400-600 kilograms of straw per mu after sowing, and the seeding rate is increased to 0.3-0.4 kilograms per mu. This will reduce soil moisture evaporation and ensure planting density.

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