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作 者 ：肖靖秀1;周桂夙1;汤利1;郑毅1;李永梅1;李隆2

期 刊 ：植物营养与肥料学报 2006年 12卷 4期 页码：517-522

关键词：间作；氮；钾；小麦白粉病；

Keywords:intercrop, nitrogen, potassium, Blumeria graminis(DC).Speer,

摘 要 ：通过小麦/蚕豆间作盆栽试验,研究比较了单作和间作条件下不同氮、钾营养水平对小麦氮、钾养分吸收和小麦白粉病发生的影响。结果表明:小麦蚕豆间作提高小麦子粒产量74.7%～133.9%,低氮条件下,间作提高小麦氮吸收量14.7%～169%;在高氮条件下,间作提高氮吸收量的优势降低;间作提高小麦钾吸收量32%～69%,增施钾肥提高小麦钾吸收量25.5%～57.3%。小麦间作蚕豆能明显减轻小麦白粉病的发生,间作平均防效达42.1%～83.1%;小麦白粉病的发生与小麦茎叶的氮吸收量呈显著正相关关系,r=0.623^*～0.702^*.*。

Abstract:Pot experiment of wheat and fababean in intercropping was conducted in Yunnan agricultural university to study the effect of different level of N and K nutrition levels on the N and K uptake and the incidence of Blumeria graminis(DC).Speer in intercropping pattern.The results showed that the grain yield of wheat increased by 74.7%—133.9% due to the intercropping,The amount of N uptake by wheat increased by 32%—69% and the K uptake increased by 32%—69% at low nitrogen supply level in intercropping.The amount of K uptake increased by 25.5%—57.3% after supply potassium fertilizer.The intercropping advantages became smaller at high nitrogen supply level.The occurrence of Blumeria graminis(DC).Speer of wheat decreased by 42.1%—83.1% in wheat and faba bean intercropping,and the occurrence of Blumeria graminis(DC) correlated with N concentration of wheat‘s stem and leaf with the coefficient being 0.623^*—0.702^**.

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