施用精喹禾灵对花生田间光照及养分的影响

The Effects of Quizalofop-p-ethyl on Light and Nutrition in Peanut Fields

通过田间试验观察10％精喹禾灵乳油对花生田禾本科杂草马唐和稗草的防除效果，并测定花生田间离地不同高度层的透光率，分析杂草防除对花生田间光照、养分和产量的影响。结果表明：10％精喹禾灵乳油能有效控制花生田禾本科杂草的危害，对马唐的密度防效和鲜重防效分别为90．40％～100．00％和91．70％～100．00％，对稗草的密度防效和鲜重防效分别为89．64%-99．81％和89．99％-99．79％；施用10％精喹禾灵乳油能显著提高花生田间的透光率，降低杂草对田间养分的吸收，促进光合作用的进行，从而提高花生的产量。

In this paper, 10% quizalofop-p-ethyl EC was applied to investigate the control effects of Digitaria sanguinalis （L.） Scop. and Echinochloa crusgalli （L.） Beauv. , and the influence of weed control on sunlight, nutrition and crop yield of peanut. The results showed that 10% quizalofop-p-ethyl EC had good control effects on gramineous weeds. The density and fresh control effects for D. sanguinalis reached 90. 40%-100. 00% and 91.70%-100. 00% respectively, and for E. crusgallithe were 89.64%-99.81% and 89. 99%-99. 79% . The application of 10% quizalofop-p-ethyl EC significantly improved the light conditions in peanut fields and reduced the weeds absorption of light and nutrition, resuiting in a significant acceleration of photosynthesis and prominent effects of yield enhancing.