氮磷钾配合对棉铃经济性状空间分布的影响  

Effects of fertilizers (N,P,K) on the spacial distribution of economic traits of cotton bolls

作　　者：海江波[1] 许玉璋[1] 申让平[1] 

机构地区：[1]西北农业大学农学系,陕西杨陵712100

出　　处：《西北农业大学学报》1999年第6期23-27,共5页Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)

基　　金：国家自然科学基金!(39270456)

摘　　要：试验结果表明：氮、磷、钾配合能显著促进棉株地上部、地下部干物质的累积，但根冠比有所降低；ＮＰＫ，ＮＰ，ＮＫ 配合有利于单株成铃率的提高，且成铃空间分布均匀；而棉铃性状表现为铃重、衣分、衣指、子指、单铃种籽数增加，不孕籽数减少，纤维长度变化不大；另外，不同的氮、磷、钾配合形式对棉铃各性状空间分布的影响趋势基本一致，影响程度是ＮＰＫ＞ ＮＰ＞ ＮＫ＞ ＰＫ．The results indicated that fertilizers (N,P,K) could promote the dry matter accumulation of root and top,as well as reduced the top root ratio.Also,fertilizers (N,P,K) could increase boll weight,lint percentage,lint index,seed index,seed number per boll,the rate of mature bolls and make boll distribution more regular in the cotton canopy,as well as could reduce the non pregnant seed number per boll.Moreover,the effects on the spacial distribution had similar tendeny with the different treatments and the effect degrees were NPK>NP>NK>PK.

关 键 词：氮磷钾 棉花 经济性状 成铃空间 

分 类 号：S562.062[农业科学—作物学]