【摘要】 通过盐碱集中区土壤盐分检测及监测,制定可行的水盐调控方案,采用黄腐酸作为化学改良剂改良膜下滴灌盐碱地,并对比分析棉花长势和产量。结果表明,随着灌水时间及灌水量的增加,土壤盐分呈现出先明显降低后局部上升的趋势;改良后,土壤pH值、易溶盐总量、SO24-、HCO3-、Mg2+、Cl-、Ca2+、K++Na+均呈明显降低趋势;试验区内棉花好、中、差3种长势类型条件下株高、棉桃数、茎粗、叶面积、产量等均优于试验区外。更多还原

【Abstract】 According to detection and monitoring of soil salinity,feasible water and salinity control program was formulated.Fulvic acid was taken as chemical modifier to modify saline-alkali soil under mulched drip irrigation,and cotton growing and production were analyzed.The results showed that:with the increase of irrigation time and irrigation volume,soil salinity first decreased significantly,then locally rose;After farmland being modified,soil pH,total soluble salt,SO24-,HCO3-,Mg2+,Cl-,Ca2+,K++ Na+all decreased significantly;Plant height,bolls number,stem diameter,leaf area,and yield of 3growing types in modified area were all better than those in the unmodified area.更多还原