棉花适时播种,争取最大限度利用其生长季节,是提早成熟、增加产量的重要措施。我省棉农,对适时早播棉花的增产作用,有一定的体会,如农谚有:“谷雨前好播棉”,“清明早立夏迟,谷雨播种正当时”;但也有“花出立夏籽” 的说法。一般讲,对适时早播的增产意义是认识不够的。过去大多失之过迟,尤其对麦茬花,怕棉苗在麦田中生长过久,造成“线苗”,因而往往在5 Cotton timely sowing, strive to maximize the use of its growing season, early maturity, an important measure to increase production. Cotton farmers in our province have a certain experience in increasing the yield of timely early-sowing cotton. For example, the agricultural proverbs are as follows: “good cotton before the valley rain”, “late Qingming morning, when the Guyu sowing is right”; but there are also “flowers to set the summer seed” statement. Generally, there is not enough understanding of the effect of increasing the yield of timely sowing. Most of the past lost too late, especially for wheat stubble, afraid of cotton seedlings grow too long in the wheat field, resulting in “thread seedlings”, which are often at 5