中国农学通报2025，Vol.41Issue(30)：34-45,12.
基于沙土不同土壤含水量的南疆棉田"干播湿出"出苗水调控研究
Study on Regulation of Emergence Water of'Dry Sowing and Wet Emergence'in Cotton Field of Southern Xinjiang Based on Different Soil Water Content in Sandy Soil
摘要
Abstract
Quantitative analysis of the regulation mechanism of drip frequency of emergence water on cotton seedling growth under different water content conditions in the'dry sowing and wet emergence'model of sandy soil in southern Xinjiang was conducted,screening the optimal frequency suitable for sandy soil,and providing theoretical support for the optimization of cotton water-saving irrigation system in arid areas.'J8031'was used as the test variety,and three soil relative water contents(W1:10%-15%;W2:15%-20%;W3:20%-25%)and three drip frequency of emergence water(F1:1 time;F2:2 times;F3:3 times)were set to explore its effects on soil physical properties,physiological and ecological indexes and root development of cotton seedlings.The results showed that soil water content,drip frequency and their interaction had significant effects on soil physical and chemical properties,plant growth and root development of cotton seedlings.With the increase of drip frequency,the soil compaction decreased significantly,while the soil EC value of each soil layer showed the opposite trend.In terms of seedling growth,the comprehensive performance of F1 treatment was the best under each water content condition,the seedling emergence rate was 85%-95%,the plant height was 24.94 cm in W2F1 combination,the stem diameter was 3.16 mm in W1F1 combination,and the dry matter accumulation was significantly higher than that of F2 and F3 treatments.In terms of root development,root weight,root mass density,root length density and other indicators were also the highest in F1 treatment.At the same time,the number of root tips in deep soil was more.The comprehensive fuzzy evaluation showed that the fuzzy comprehensive index of F1 treatment was the largest among the 10 indexes,which was the optimal drip management strategy to promote the emergence,strong seedling and root healthy development of cotton under different soil water contents.Under the condition of sandy soil in southern Xinjiang,the application of one-time seedling water in'dry sowing and wet emergence'cotton field can effectively promote the emergence of cotton seedlings and is conducive to the growth and development of seedling stage.关键词
棉花/干播湿出/沙土/土壤含水量/出苗水调控Key words
cotton/dry sowing and wet emergence/sand soil/soil moisture content/regulation of seedling emergence water分类
农业科技引用本文复制引用
罗单,李金鸿,付永强,阿孜古丽·阿布力孜,杨健,马辉,阿布都艾尼·阿布都维力,周仑,汤秋香,欧欢,李星星,艾麦尔江·阿布力提甫..基于沙土不同土壤含水量的南疆棉田"干播湿出"出苗水调控研究[J].中国农学通报,2025,41(30):34-45,12.基金项目
新疆维吾尔自治区自然科学基金地州科学基金项目"基于典型质地土壤含水量的南疆棉田'干播湿出'出苗水调控"(2023D01F33). （2023D01F33）
