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2003年至2004年,对保山市蚕豆小麦间作条件下养分利用对病虫危害的影响进行调查研究。结果表明,蚕豆小麦间作模式中,施用氮肥和磷肥水平下,对病虫的生物控制效果均低于施钾肥水平。施钾肥的处理,斑潜蝇的虫情指数比对照降低了0.9,相对防效达19.40%;小麦锈病的病情指数比对照降低了2.36,相对防效达49.89%。因此,蚕豆小麦间作时,在施用氮、磷肥的基础上,应适当增施钾肥,能有效地控制病虫的危害。
From 2003 to 2004, the impact of nutrient use on pest and disease damage was investigated in Vicia faba wheat under intercropping conditions. The results showed that in the faba bean intercropping mode, the biological control effects on pests were lower than those on the application of nitrogen and phosphate fertilizers. Potash index decreased by 0.9 and the relative control efficiency was 19.40%. The disease index of wheat rust decreased by 2.36 compared with the control, and the relative control efficiency reached 49.89%. Therefore, when the fababean wheat intercropping is applied on the basis of applying nitrogen and phosphate fertilizer, potash fertilizer should be applied properly to effectively control the pests and diseases.