复合肥与腐殖酸配施对盐碱地改良及棉花生长的影响

摘要

In order to improve the utilization of fertilizer and improve the output of cotton in saline-alkali land , the effect of humic acid and inorganic fertilizers on modifying saline-alkali soil and the growth of cotton were analyzed .The results indicated that under the eguivalent level of inorganic nutrition ,the application of humic acid and inorganic fertilizers distinctly inhibited the increasing of soil salinity ,decreased soil pH value and in-creased the contents of organic matter .Compared to CK and application of inorganic fertilizers ,the yield of cot-ton was increased by 17 .7% and 5 .8% .The contents of available nitrogen and phosphorus and potassium in soil were increased by 5 .7% ,33 .1% and 24 .4% compared to applying inorganic fertilizers .%为提高肥料利用率 ,提高盐碱地的棉花产量 ,研究了复合肥与腐殖酸配合施用对盐碱地改良及棉花生长的影响.结果表明 :于等量无机养分水平下 ,施用腐殖酸能有效的缓解土壤全盐量的增加 ,降低土壤酸碱度 ,增加土壤有机质含量.与对照和单独施用复合肥相比 ,普通复合肥配合腐殖酸施用后 ,棉花产量分别增产17 .7% 和5 .8% .相比单独施用普通复合肥 ,与腐殖酸配合施用后 ,土壤碱解氮、速效磷和速效钾含量分别增长5 .7% 、33 .1% 、24 .4% .