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一、施追肥:追肥要根据棉株生长情况和需要来确定。原则上苗期多施磷肥,花期多施氮肥,延长追肥时间,保证棉花生长后期有充足的养分。在棉花定苗时(5月上旬)撒壮土9,000斤、沟施过磷酸钙50斤、油渣200斤;现蕾期(6月上旬)施油渣200斤、尿素10斤、猪粪3,000斤、羊粪6,000斤,开花期(7月上旬)施尿素20斤、过磷酸钙20斤;盛花期(7月下旬)施硫酸铵25斤、过磷酸钙15斤,8月上旬
First, top dressing: top dressing according to cotton growth and needs to determine. In principle, more phosphorus fertilizer in seedling stage, more nitrogen fertilizer flowering, extending the top dressing time to ensure adequate cotton growth late nutrients. In the cotton Dingmiao (early May) sprinkle 9,000 pounds of soil, ditch over 50 kg of calcium phosphate, oil residue 200 pounds; budding period (early June) 200 kg of oil residue, urea 10 pounds, pig manure 3,000 pounds , Sheep manure 6,000 pounds, flowering (early July) urea 20 kg, 20 kg of superphosphate; full flowering (late July) 25 kg of ammonium sulfate, 15 kg of superphosphate, early August