摘要
1989～1993年对四川不同海拔地区茶园主要杂草发生种类、发生期、发生量、群落组成及10种主要杂草对茶树生长的影响和杂草防除技术等进行了调查.结果表明四川茶园主要杂草共有38科106属144种,其中低海拔区34科108种,中海拔区30科97种,高海拔区24科72种;茶园少数杂草常年均有发生,多数杂草在中、低海拔区分别在5月和7月有两个发生高峰期;高海拔区只在6月出现一个高峰期;群落组成各海拔地区基本相同,主要为禾本科杂草(马唐、白茅、狗牙根、莠竹)、阔叶杂草(蓼草、扛板归、野塘蒿、马兰、凤尾蕨)和少数莎草科杂草(香附子、水蜈蚣).10种主要杂草对茶树生长危害率为22%～100%(30株/m^2);草甘膦和克芜踪防除茶园杂草防效达95%以上,保产效果为16.8%～19.4%,每公顷可增加410～497元的经济效益.
An investigation on the species .growth period and the quntlity,community composition of main weeds in tes garden of Sichuan province,as well as the damage of 10 species of dominant weeds to the growth of tea and the control technique were conducted. The results showed that the species of weeds in the tea garden of Sichuan had 38 families, 106 genuses,144 species. In the area at low altitude, there were 34 families, 108 speaes and 24 families,47 speaes in middle altitude area. A few species of weeds grew throughout the year,but the bulk appeared two peaks ofgrowth period in May and June in the area at middle and low altitude and one peak in June in the area at high altitude. The dominant species were the grass and latifoliate weed and a few were sedge weeds. The damage rate of major weeds to tea growth ranged 22%-100% (in density of 30plants/m2). The control efficient of herbicides,glyphosate and kewuzhong were up to 90% ,the safeguasded effect to production ranged 16. 8%～19. 84%,the economic benifit ranged 410-497 RMB yuan per hectare.
出处
《西南农业学报》
CSCD
1994年第S1期105-109,共5页
Southwest China Journal of Agricultural Sciences
基金
四川省农科院青年基金资助课题
关键词
茶园杂草
种类
海拔分布
发生规律
危害性
防除
四川
Tea garden,Weed,Species,Growth regularity,Damage,Control meacurement Sichuan Province
