【摘 要】
：
关于育苗移栽棉花高产栽培中氮、磷、钾的施用量,连续3年的田间试验结果指出,在供试土壤条件下,当氮磷钾三要素中的磷钾或氮磷两因素固定在一定水平时,随着氮或钾施用量的增
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关于育苗移栽棉花高产栽培中氮、磷、钾的施用量,连续3年的田间试验结果指出,在供试土壤条件下,当氮磷钾三要素中的磷钾或氮磷两因素固定在一定水平时,随着氮或钾施用量的增加,子棉产量呈规律性的二次曲线变化,但磷的效果不明显。在限制用钾的条件下,优化组合中三要素的施用量为:N12～15公斤/亩,P_2O_5 2.5～5公斤/亩,K_2O 5～7公斤/亩。
On the high-yielding cultivation of transplanting seedlings cotton nitrogen, phosphorus and potassium application rate, three consecutive years of field test results show that in the test soil conditions, when the three elements of nitrogen, phosphorus and potassium phosphorus or nitrogen and phosphorus fixed at At a certain level, with the increase of nitrogen or potassium application, the yield of seed cotton showed a regular quadratic curve, but the effect of phosphorus was not obvious. Under the condition of potassium limitation, the optimal combination of three elements is N12 ~ 15kg / mu, P_2O_5 2.5 ~ 5kg / mu, K_2O5 ~ 7kg / mu.
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