克芜踪净化红豆草播种地杂草试验

EXPERIMENT OF CLEARING AWAY WEEDS IN SOWING PLOT OF ONOBRYCHIS VICIAEFOLIA WITH GRAMOXONE

１９９２～１９９３年试验表明，在因杂草侵入而弃耕的土地上播种红豆草时，在播前和出苗前采用克芜踪除草剂，其杂草防除率为３３．５％～３７．１％；控制杂草鲜重效果为７３．２％～８６．５％；红豆草鲜重增加３５．８％～６４．５％；红豆草株高增加１３．７％～１６．３％。在耕地上进行的试验结果是防除杂草株数效果７６．６％～８２．７％；控制杂草鲜重效果为８２．２％～９０．６％；红豆草鲜重增加５６．３％～１１１．８％；红豆草株高增加１５．４％～２１．５％。说明克芜踪除草剂对抑制杂草，促进红豆草生长有明显效果。

The test in 1992～1993 had shown when O. viciaefolia was sown in uncultivated land, and accepted Gramoxone Herbicide before sowing and seedling emergency, the rate of weeds controlled Was 33.5%～37.1%; The rate of fresh weight of weeds controlled was 73.2%～86.5%; Its fresh weight increased by35.8%～64.5%; Its plant height increased by 1 3.7%～16.3%。 The test result in cultivated land hadshown that the rate of plant of weeds controiled was 76.6%～82.7%; The rate of fresh weight of weedscontrolled was 82.2%～90.6%; Its fresh weight increased by 56.3%～111.8%; Its plant heightincreased by 15.4%～21.5%。The results above showed Gramoxone Herbicide had the obvious effect tocontroll weeds and promote O. viaciaefolia growing.