有机无机氮肥配施对棉花生育特性及土壤含氮量的影响  

Effects of Combined Application of Organic and Inorganic Nitrogen Fertilizer on Developmental Characteristics of Cotton and Nitrogen Content in Soil

作　　者：张美良[1] 刘桂华[2] 唐建军[1] 钟有林[3] 刘经荣[1] 

机构地区：[1]江西农业大学,江西南昌330045 [2]江西宜春学院农学系,江西宜春336000 [3]江西省农业厅农业技术推广中心

出　　处：《江西农业学报》2003年第3期1-5,共5页Acta Agriculturae Jiangxi

基　　金：江西省自然科学基金资助项目(983001)。

摘　　要：采用模拟试验方法,研究了有机无机N肥配施对棉花产量及其构成因素、干物质积累与分配和土壤全N量的影响。结果表明:施用N肥能促进各生育时期棉株和各器官的干物质积累,增加LAI,极显著提高单位面积总铃数和棉花产量;在施用等量N、P、K的条件下,绿肥+沼肥+化肥配施的综合效果较好,绿肥+化肥配施次之,单施无机N肥效果较差;有机无机氮肥配施能提高土壤全N量。Effects of combined application of organic and inorganic nitrogen fertilizer on the yield and yield components of cotton, accumulation and distribution of dry matter in cotton and total nitrogen content in the soil were studied through simulation test. The results showed that application of nitrogen fertilizer could promote the accumulation of dry matter in cotton plants and organs at different growth and development stages, increase the value of LAI and significantly enhance the total bolls per unit area and yield of cotton. Under the condition of applying the same amount of N, P and K fertilizer, the comprehensive effect of combined application of green manure, biogas and chemical fertilizer was the best, that of mixed application of green manure and chemical fertilizer was the second best, that of sole application of inorganic nitrogen fertilizer was the worst. The combined application of organic and inorganic nitrogen fertilizer could increase the total nitrogen content in the soil.

关 键 词：有机氮肥 无机氮肥 配合使用 棉花 生育特性 土壤 含氮量 影响因素 

分 类 号：S562[农业科学—作物学]