菜田化学除草,具有除草效果显著、成本低、经济效益高等优点.但使用效果条件与药剂本身的特性,及蔬菜的种类、杂草的形态、生理及生化特点有关.此外,施用时机、使用浓度和方法等也与除草效果有密切关系.使用前最好先做好田间小试验,然后大面积应用.现将几种主要菜田的化学除草方法简介如下: 一、芹菜、胡萝卜,香菜等伞形花科蔬菜的除草方法.这几种蔬菜多为畦播,苗较密集,不便除草,容易出现 Vegetable field chemical weeding, with herbicidal effect is significant, low cost, high economic efficiency, but the use of effect conditions and the characteristics of the agent itself, and the type of vegetables, weeds morphological, physiological and biochemical characteristics.In addition, the timing of the use of Concentration and methods are also closely related to the weeding effect is best to do a good job before the first small field trials, and then large-scale application of several major vegetable fields now weeding chemical methods are as follows: First, celery, carrots, parsley Umbelliferous vegetables weeding method. These vegetables are mostly broadcast, more dense seedlings, inconvenience weeding, prone to