龙眼主要栽培在南亚热带的丘陵地、坡地,在常年高温高湿的区域不仅有利于龙眼的生长,也使杂草生长旺盛。栽培上种植嫁接树苗,果园间杂草发生,不仅不利于开展果园管理工作,而且还是许多病虫的中间寄主,所以草害防除是十分重要而又繁重的工作。由于绝大多数杂草都需进行防除,只有 Longan mainly cultivated in the southern subtropical hilly land, slopes, perennial high temperature and humidity in the region is not only conducive to the growth of longan, but also weeds vigorous growth. Planting on the cultivation of grafted saplings, orchards occur between the orchards, is not only not conducive to the management of orchards, but also the middle host of many pests, so the grass control is very important and arduous work. Because most of the weeds need to be controlled, only