果树株行距大,适于杂草发生,其发生时间长,数量大,为害严重。果园受杂草为害可使产量减少10%～20%, 草荒严重的果园,幼树不能适龄结果,结果后树势衰弱,寿命缩短,果小色差质次,病虫多,商品率低,效益差。葡萄受杂草为害后,不能迅速抽出新的枝条,生长严重不良,使产量显著下降;果树苗圃受草害后,幼树生长缓慢,苗木品质下降;新果园株间空地较多,杂草发生较重,不仅影响产量,还影响其他作物的生长;成年果园,杂草种类相对稳定,有的杂草丛生,有的多年生杂 Large spacing of fruit trees, suitable for weeds, the occurrence of a long time, a large number of serious damage. Orchard damage by weeds can reduce the yield of 10% to 20%, serious grass shortage of orchards, young trees can not age results, the results after the weak bonsai, shortened life expectancy, small fruit color quality, pests and diseases, the rate of low product efficiency difference. After grapes were weed-harmed, new branches could not be rapidly extracted and the growth was bad and the yield was significantly reduced. After the nursery was damaged, the young trees grew slowly and the quality of seedlings decreased. Heavier, not only affect the yield, but also affect the growth of other crops; adult orchards, weeds species is relatively stable, some weeds clustered, and some perennial miscellaneous