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大面积种植牧草时,防治杂草是一个重要而麻烦的问题。因牧草苗期生长缓慢,而各种杂草生长迅速,形成优势,影响牧草的生长。我县人工草场曾采用人工除杂草,每亩花工三个,需耗大量的人力和财力。为寻求省力省资金又能控制杂草的途径,笔者采用适当推迟牧草播种期的方法,取得了较好的效果,现介绍于下,供参考。一、材料与方法 (一) 试验地概况:试验地在海拔2100米,坡度25°,土质基本一致,为长满紫茎泽兰丢荒几年的弃耕地。当地年均气温14.5℃,雨量
Control of weeds is an important and troublesome problem when large areas are planted with pasture. Due to the slow growth of forage seedling stage, and a variety of weeds rapid growth, the formation of advantages, affecting the growth of forage. Artificial pastures in our county have used artificial weeds, three flowers per acre, requiring a lot of manpower and financial resources. In order to seek ways to save energy and control weeds, the author adopted the appropriate method of postponing the sowing period of forage and achieved good results. The present report is for reference below. I. Materials and Methods (I) Overview of the Experiment Site: The experiment site was at an altitude of 2,100 meters with a gradient of 25 °. The soil quality was basically the same, and it was an abandoned farmland covered with abandoned Eupatorium adenophorum for years. Local average annual temperature of 14.5 ℃, rainfall