有机无机氮肥配施对棉花产量形成和干物质生产特性的影响研究  

Effect of combing application of organinorganil nitrogen fertilizer on cotton's yeild formation and on dry matter production characteristics

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]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,江西南昌330046

出　　处：《江西棉花》2003年第3期10-14,共5页Jiangxi Cottons

基　　金：江西省自然科学基金资助项目 (9830 0 1 )

摘　　要：采用模拟试验方法 ,研究了棉田生态系统中有机无机肥配施对棉花产量及其构成因素、干物质积累和分配的影响。结果证明 :(1 )施用N肥能促进各生育时期棉株和各器官干物质积累、增加LAI、改善棉株农艺性状、极显著提高单位面积总铃数和棉花产量 ;(2 )在等N、P、K条件下 ,与单施无机N相比 ,绿肥 +沼肥 +化肥配施对于提高棉花单位面积总铃数和产量、增加棉株和各器官干物量、促进不同生育时期棉株各器官干物量合理分配、使棉花生育后期保持最后LAI并降低LAI衰减速度效果较好 ,绿肥 +化肥配施次之 ,单施无机N肥较差。Effect of combining organ-inorganil fertikizer cotton yield and yield components The accumulation and distribntion of dry matter in cotton field elosystem was studied by simulationg trial method The results indicated that:(1)Nitrogen application can promote the accumulation of dry matter in cotton organs during different growing stages Increase the LAI value,rerfect cotton's agricutural characteristic and remarkably increase total of cotton bolls and yeild in unit area (2)under an equal amount of N pand k Condition,compared with only imorgamic nitrogen The combining application of green manure and biogas fertilizer and chemical fertilicel can increase the total of bolls and yeild,increase the accumuation of dry matter in different organs,promote dry matter rational distribution in various organs duriy different growing stages and it is also abll to maintain a cartain LAI during later groning stage and decrease the speed of LAI decline Effect of combining application of green matre and chemical fertlizer was situated in between the two formers

关 键 词：棉花 有机氮肥 无机氮肥 配方施肥 产量形成 干物质生产 模拟试验 

分 类 号：S562[农业科学—作物学] S143.1