Autumn spinach winter topdressing techniques

Pour over the frozen water.Pouring frozen water must be "certain" and "two suitable"."Must" is according to the soil moisture content how much to decide whether to pour frozen water.In general, the water content of sandy loam is less than 15%, that of loam is less than 17%, and that of clay is less than 20%."Two appropriate" is the right time to water and the right amount of water.Appropriate water time is the day soil surface can be frozen, frozen at night, when the right amount of water is not too large or too small frozen water, generally to connect with the soil moisture is appropriate.

Chase after winter fat.Topdressing overwintering fertilizer can increase soil nutrient content, play a role in winter fertilizer and spring, and promote weak to strong.It is especially important for vegetable fields with less basal fertilizer, poor soil fertility and weak seedling conditions.Therefore, should be combined with pouring frozen water topdressing winter fertilizer, general mu of urea 10 kg or ammonium sulfate 20 kg, with water topdressing fertilizer.

Cover against cold.Cold period low temperature is very unfavorable to seedling safety overwintering in northern area, because this should use cover, prevent cold, ensure seedling safety overwintering.Mulching can generally be carried out after all the surface soil has frozen.Mulch is rich in organic matter and through breaking and mashing fine farmyard fertilizer, mu sa is controlled 1000 kilograms can.