不同分根条件下氮对间作小麦生长和白粉病发生的影响

来源 :云南农业大学学报 | 被引量 : 0次 | 上传用户:buxingzhe3
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以小麦蚕豆间作方式为研究对象,通过根系分隔技术,主要研究了在小麦蚕豆根系不分隔(I)、尼龙网分隔(M)和塑料膜分隔(P)3种根系分隔条件下,供氮水平(N0,N0.05,N0.1和N0.2)对小麦生长和白粉病病害发生的影响。结果表明,施氮显著提高了间作小麦的生物量。在3种不同的根系分隔方式下(I,P和M),N0.05水平小麦地上部的生物量分别比N0水平增加了59.9%,62.6%和58.6%。随着供氮水平的提高,小麦自粉病的发病率和病情指数均明显增加,在3种根系分隔方式下,分别增加337.1%~1213.6
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