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1980年,靖江县在太和、土桥等地,试行在前季稻收后完全不耕,即板茬泡水免耕法(简称免耕,下同)栽培后季稻,取得成功经验.1983年,全县用免耕法栽培的面积达8.27万亩(占移栽面积的50%),平均亩产770.1斤,比常规栽培每亩增收49.9斤,增产6.92%.免耕法栽培后季稻所以能增产,主要有以下几方面的原因.1.抢得季节.靖江县双三制面积大,季节是影响后季稻产量的重要因素.常年在8月3日以后,每迟栽一天,亩产要减20多斤,栽期愈迟,减产愈烈.免耕栽插,由于免去了耕耙地等工序,不再受忙季机、牛安排等因素制约,前季稻一离田,即可上水栽秧,可比常规耕法早栽1～2天.
1980, Jingjiang County in Taihe, Tuqiao and other places, the trial in the first crop of rice after no harvest, that is, non-tillage stubble soaked in water (hereinafter referred to as no-tillage, the same below) after the cultivation of rice, and gain successful experience. In 1983, the area with no-till cultivation reached 82.7 mu (accounting for 50% of the transplanted area), with an average yield of 770.1 kg per mu, 49.9 kg more than that of conventional cultivation and a yield increase of 6.92%. Quaternized rice can increase production, mainly for the following reasons.1 The grab season.Jingjiang double Shuangsan area, season is an important factor affecting the yield of later season rice perennial after August 3, every late planted One day, the mu production should be reduced by 20 kilos, and the later the planting period, the more intense the production. No-till planting, due to the removal of cultivated land and other processes, no longer affected by the busy season, cattle arrangements and other factors, A field can be planted in Sheung Shui, than the conventional tillage planted 1 to 2 days.