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应用毒死蜱和灭虫威处理多年生黑麦草、白三叶混播小区试验,白三叶的比重两年后比未经处理小区增加了三倍多。毒死蜱效果显著。其缘由主要是对美丽根瘤象的控制。此二种杀虫剂的混合处理,在试验期内牧草干物质总量增加4.24吨/公顷,但在草播黑麦草小区(增产)效果甚微。灭虫威虽有助于三叶草的早期生长,但对于蛞蝓控制不佳。蛞蝓在试验初期少见,而后期较多,低氰栽培品种抗蛞蝓的效果较明显,但氰的含量不影响毒死蜱的效果。
Application of chlorpyrifos and pest control in perennial ryegrass, white clover mixed-plot test, the proportion of white clover two years later than untreated plots increased more than threefold. Chlorpyrifos significant effect. Its main reason is the control of the beautiful root nodules. The combined treatment of these two insecticides increased total pasture dry matter by 4.24 tons per hectare during the trial period, but little effect was found in the grass-planting of ryegrass plots. Although the insect pest control contribute to the early growth of clover, but poor control slugs. Rickettsia is rare in the early stage of the experiment, but more in later stage. The anti-rickety mildew effect of low-cyanide cultivars is more obvious, but the content of cyanide does not affect the effect of chlorpyrifos.