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一、基肥:一般亩施腐熟的优质农肥4000～5000公斤,并加过磷酸钙15～20公斤,硫酸钾15公斤或草木灰100公斤。对土壤肥力较差的地块还应适当施用一部分人畜粪尿。基肥最后一次耕地时施下,结合耕耙,使土肥混合均匀,比较粘重的土壤,可以将一部分腐熟厩肥用的作盖籽肥。这样既可避免因土壤板结而使出苗困难,又可使种子发芽后及时得到养分的供给。 二、幼苗期追肥:大白菜幼苗
First, the basal: General Mushi humic high-quality agricultural fertilizer 4000 to 5000 kg, and add 15 to 20 kg of calcium phosphate, potassium sulfate 15 kg or 100 kg of ash. Soil fertility of poor plots should also be appropriate to use part of human and animal manure urine. The basal fertilizer is applied on the last cropping and combined with harrowing so that soil and fertilizer are well mixed and relatively sticky soil can be used as cover seed fertilizer for part of decomposed manure. This will not only make the emergence of soil compaction difficulties, but also make the seeds germinate timely supply of nutrients. Second, seedling topdressing: Chinese cabbage seedlings