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三麦冬前苗情优劣,常在很大程度上决定了产量的高低。然而苏南秋播季节常由于农时紧,田地过湿或播后遇旱等不良条件,再加上务农劳力减弱等因素,使很大一部分面积不能保证适时、优质播种,三类苗的面积常年要占到30％左右,灾年比率更大,严重影响着三麦总产的提高。生产上极需寻求一种能抗不良自然条件,费工少、经济效益高的三麦播种方法,这一需求促使我们开展了免耕法的研究。
Three Ophiopogon seedlings before and after the merits, often to a large extent determines the level of production. However, the autumn season of southern Jiangsu is often due to tight agricultural conditions, over-wet fields or drought and other adverse conditions after sowing, coupled with the weakening of agricultural labor and other factors, so a large part of the area can not guarantee timely and high-quality sowing, perennial area of three types of seedlings To about 30%, the disaster rate is greater, a serious impact on the overall increase in the three wheat. In the production, it is extremely necessary to find a method for sowing wheat seeds which can resist adverse natural conditions, reduce the labor cost and have high economic efficiency. This demand prompts us to carry out the study of no-tillage method.