柑桔园巧用除草剂果园中耕，不但耗费人力，还会损伤表土根系。对于定植前至幼树期间已完成土壤深耕改土的果园，可采用免耕法进行化学除草。笔者在近两年的实际操作中获得几点体会，现介绍如下：１掌握好用药时间。全年务必进行两次，每次选择杂革生长最盛时进行。在湖南... Clever use of citrus orchards garden orchard cultivation, not only labor-intensive, but also damage the topsoil roots. No-tillage can be used for chemical weeding of orchards that have been completed with soil plowing and soil improvement prior to planting to saplings. The author in the past two years to gain some experience in the actual operation, are introduced as follows: 1 Master medication time. Must be carried out twice a year, each time the most flourishing growth of choice. In Hunan ...