摘要
根据塔里木盆地绿洲区三处试验点棉花耐盐试验观测资料,应用spss for windows统计软件进行分析,建立了两种形式的棉花耐盐函数:线性分段式和非线性-S型。通过对它们进行分析比较,得出型函数及由其推得的棉花耐盐阈值更符合该地区产量-土壤盐分的响应关系。
Two groups of yield response functions of cotton in Tarim Basin are established according to the salt tolerance data from three experimental sites,which are based upon linear and non-linear by spss for Windows.One is a group of linear response functions which contain two independent parameters： the salinity threshold（st） and the slope（c） of the curve.The other is a group of non-linear shaped curve response functions which contain two independent parameters： s50（the salinity at which the yield is reduced by 50%） and（an empirical constant）.The non-linear functions and their thresholds of salt tolerance can correspond with the cotton yield-soil salinity in Tarim Basin better than the linear response functions by analyzing their differences.
出处
《中国农村水利水电》
北大核心
2010年第8期80-82,共3页
China Rural Water and Hydropower
基金
新疆维吾尔自治区科技攻关重大专项(20073117-3)
中国科学院"西部之光"人才计划"联合学者"项目
中国科学院知识创新工程重要方向项目(KZCX2-XB2-03)
国家自然科学基金(编号40471020)
关键词
耐盐阈值
棉花
咸水灌溉
threshold of salt tolerance
cotton
irrigation with saline water
