First, pour good frozen water. The freezing water should be determined according to the soil moisture content. Generally, the absolute water content of sandy loam soil is less than 15%, the loam soil is less than 17%, and the frozen water should be poured when the clay is less than 20%. It has been proved that freezing in the night and watering in the daytime during freezing are just right. Combined with frozen water, topdressing nitrogen fertilizers and high-quality farmyard fertilizers may be appropriate, and pouring of manure water is best. The amount of frozen water is generally suitable for connecting to the bottom.
Second, catch up with winter fertilizer. Combined with pouring frozen water, Mushi urea 10 kg or ammonium sulfate 20 kg, with the water topdressing.
Third, cover the cover. Coverage can generally be carried out after all the soil in the plough layer is frozen. To cover the farmer's fertilizer is the best, mu 1000 kg.
Fourth, clip a wind barrier. It can prevent wind and heat, keep the spinach safe for winter, return green in advance, and harvest to prevent livestock harm.
Fifth, timely snow removal. During the winter, there is snow on the spinach seedlings that must be cleaned in time to prevent the spinach from being licked or stuffy when it is thawed.
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