免耕小麦化学除草是获取小麦高产、省工、经济栽培的新途径。1986年秋播小麦前,在成都市新兴乡的15个村,640亩免耕小麦田中进行化学除草后撬窝播种小麦,防除禾本科杂草效果,前后期达显著水平,每亩增产小麦在6—24.5％之间,平均每亩增产率达8.73％。现将示范结果初报如下: 一、示范内容与方法 1、示范药剂:用20％杀草快水剂,每亩用药量200克兑水40—50公斤,均匀喷雾全田3—4天后撬窝播种。 2、示范效果调查:根据全乡7种类型田的土质,在7户社员田设免耕小麦化学除草后,撬 Tillage-free wheat chemical weeding is a new way to obtain high-yield wheat, labor-saving and economic cultivation. Prior to the autumn wheat sowing in 1986, wheat was sown in 15 villages of Xinxing Township, Chengdu, with 640 mu of tillage-free wheat fields to prune the litter to prevent and control gramineous weeds. The yield of wheat per acre increased from 6 to 6 -24.5%, the average yield increase of 8.73% per mu. The first demonstration results are as follows: First, the demonstration content and methods 1, demonstration Pharmacy: 20% to kill grass faster agent, dosage of 200 grams per mu watered 40-50 kg, evenly spray the whole field 3-4 days after the pry Nest sowing. 2, Demonstration effect survey: According to the township 7 kinds of fields of soil quality, set aside in seven members of field tillage wheat chemical weeding, pry