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草害不仅是林木生长的大敌,而且还直接影响苗木造林后的成活和保存。过去主要依靠人工和机械铲除幼林地的杂草,随着四化建设的不断深入和发展,国营和集体造林面积越来越大,幼林除草任务也随之加重。人工除草不但劳动强度大,而且还需要占用大量的劳动力。机械除草也有一定的局限性,株间杂草不能全面除掉,行间杂草被清除后,株问杂草长势随之更旺,对幼树影响仍然很大。为了改进幼林除草技术,适应林业现代化的需要,1980年,我们在镇赉县大岗林场和莫莫格林场的大力支持下,对幼林应用化学除草做了一些试验研究,初步取得了一定效果,现简报如下:
Grass damage is not only the enemy of forest growth, but also directly affects the survival and preservation of seedlings afforestation. In the past, weeds relying mainly on artificial and mechanical measures to eradicate young woodlands continued to deepen and develop with the four modernizations. As a result, the state-owned and collective afforestation areas became larger and larger, and the task of weeding young trees was also aggravated. Artificial weeding not only labor-intensive, but also need to take up a lot of labor. Mechanical weeding also has some limitations, weeds can not be completely removed between rows of weeds were cleared, the plant asked the weeds grow more prosperous, the sapling is still a great influence. In order to improve the technology of young grass weed control and meet the needs of forestry modernization, in 1980, with the strong support of Dagang Forest Farm and Momo Green Forest Farm in Zhenlai County, we made some experimental researches on the application of chemical weeding in young forests and achieved some preliminary results. Briefing is as follows: