在多年的林业生产实践中,使我们深刻认识到林内杂草,特别是多年生的茅草、香附草(地藜)等很难防除,它对林木、果树、苗木威胁较大,直接影响幼树能否成林,果树能否正常生长与结果的主要因素之一.过去我场曾采用人工或机械灭草,但效果不佳,为了找出一条经济有效的灭草新途径,从1980年开始,我们连续三年在林区果园中,用草甘膦进行灭草试验,取得了很好效果,现概述如下. In many years of forestry production practice, we have deeply realized that weeds in forests, especially perennial grass, incense and weeds (Quinoa) and so difficult to control, it is a threat to trees, fruit trees, seedlings, a direct impact on saplings One of the main factors that can lead to the success of the forest and the normal growth of the fruit tree and the result is that in the past, artificial or mechanical weeds were used in the field but the effect was not good. In order to find out a new and economical way to destroy the weeds, , We have carried out the weed control experiment with glyphosate for three consecutive years in the forest orchard and achieved good results. The results are summarized as follows.