Use "3414" fertilizer efficiency test,the apparent nutrient utilization efficiency of rice,cotton,rape,wheat in soil and fertilizer as well as the absorption rate of nitrogen (N),phosphorus (P),potassium (K) by crops in Qianjiang city of Hubei province were analyzed.Results indicated that the relative utilization rate of N,P and K nutrient of the same season by rice was 36.1％,12.8％ and 58.7％ respectively; by cotton was 25.1％,18.5％ and 33.6％,respectively; by wheat was 20.1％,11.8％ and 39.4％ respectively; by rape was 17.8％,4.9％ and 23.4％,respectively.With the application of N,P and K,in every kilogram economic outputs of crops,the uptake dose of N,P and K by rice was 2.79,4.4 and 30.7 g,respectively; by cotton was 53.7,10.6 and 45.5 g,respectively; by wheat was 26.4,3.9 and 25.0g respectively; by rape was 40.7,9.6 and 37.3 g,respectively.%利用“3414”肥料效应试验,研究了湖北省潜江市中稻、棉花、油菜、小麦对土壤和肥料有效养分表现利用率和作物对氮、磷、钾养分的吸收量.结果表明,氮、磷、钾肥养分当季相对利用率中稻分别为36.1％、12.8％和58.7％,棉花分别为25.1％、18.5％和33.6％,小麦分别为20.1％、11.8％和39.4％,油菜分别为17.8％、4.9％和23.4％.在N、P、K配施的情况下,作物每千克经济产量氮、磷、钾养分吸收量中稻分别为27.9、4.4和30.7 g,棉花分别为53.7、10.6和45.5 g,小麦分别为26.4、3.9和25.0 g,油菜分别为40.7、9.6和37.3 g.
展开▼
