间作环境中小麦氮钾养分吸收利用与干物质累积的动态变化特征  

Nitrogen,Potassium Uptake and Utilization in Wheat and the Character of Dynamic Variation of Dry Matter Accumulation under Intercropping

作　　者：刘自红[1] 苏海鹏[1] 汤利[1] 

机构地区：[1]云南农业大学资源与环境科学学院,云南昆明650201

出　　处：《云南农业大学学报》2007年第6期893-897,共5页Journal of Yunnan Agricultural University

基　　金：国家自然科学基金(30460061);云南省自然科学基金(2003C0040M;2003C0041M);云南省省院省校合作项目(2003FCCF03A009)

摘　　要：采用田间试验研究了小麦蚕豆间作环境对小麦氮钾养分吸收利用及小麦产量的影响。研究表明:小麦蚕豆间作在小麦干物质累积和产量上较单作具有明显优势。在常规施氮水平下,间作小麦生物量较单作小麦高30.6%,产量较单作增加了12.8%。在抽穗期至乳熟期,小麦茎、叶、穗氮含量和小麦穗钾含量均表现出间作第1行>间作第3行>单作,但收获时间作小麦茎叶钾含量呈低于单作趋势。小麦氮、钾养分累积量为间作第1行>单作>间作第3行。The field experiments were conducted to study the affection of nitrogen, potassium uptake, utilization and yield of wheat under the condition of two crops intercropping. The results showed that the obvious facilitation of the accumulation of the dry matter and the yield was got by intercrop. In general nitrogen fertilizer level, the biomass and the yield of intercropped wheat is compared with monocropping increased 30. 6% and 12. 8% respectively. From heading stage to milky maturity stage, the nitrogen content of the stem, leaf and spike of wheat and the potassium content of the spike of wheat are presented that the first row 〉 the third row 〉 monocropping, but the potassium content of the stem of the wheat is presented that lower than mono cropping after harvest. The accumulation of N, K in wheat is presented that the first row 〉 monocropping 〉 the third row.

关 键 词：间作 小麦 氮钾吸收利用 动态变化 

分 类 号：S512.01[农业科学—作物学] S344.2