桔园杂草的发生及化学防除据调查，云南柑桔园杂草有３个发生高峰期，其中３～４月为以根、茎萌发的多年生杂草；５～８月为以种子荫发的１年生杂草，发生量大，危害最重；９～１０月为多年生、１年生混合的杂草。精细耕作，水肥条件好的苗圃和翻耕较多的成龄果园以种子萌... Orange garden weed occurrence and chemical control According to the survey, Yunnan citrus orchard weeds have three peak, of which 3 to 4 months to roots and stems of perennial weeds; 5 to August for the seed shade Of the annual weeds, the occurrence of large, most harmful; September to October for perennial, mixed annual weed. Fine farming, water and fertilizer conditions, good nursery and plowing more mature orchards to seed Meng ...