论文部分内容阅读
随着种植制度的改革,麦棉两熟在我国棉花生产中已成为主体。这种植棉结构存在的主要问题是棉花迟发晚熟,霜前花率低,产量下降,品质变劣,而且影响下茬小麦播种。因此,开展两熟棉促早避霜实用技术研究,使两熟棉花吐絮早而集中,提高产量和纤维品质,对我国的棉花生产具有重要意义。 1 材料与方法 试验在河南安阳中国农业科学院棉花研究所试验农场进行。1997、1998连续两年在3—2式带宽140cm的麦棉垄作地进行试验,预留棉行100cm,设:①棉行与麦行的间距为35cm,棉花窄行间距30cm,地膜覆盖;②棉行与麦行的间距为25cm,棉花行间距50cm,地膜覆盖;③棉行与麦行的间
With the reform of the planting system, the double crop of wheat and cotton has become the main body in the cotton production in our country. The main problems with this cotton planting structure are late cotton late maturity, frost bloom rate before the low yield, poor quality, but also affect the next sowing wheat. Therefore, to carry out two ripe cotton to avoid frost practical technology research, so that two cotton bolls sooner rather concentrated to improve yield and fiber quality, China’s cotton production is of great significance. 1 Materials and Methods The experiment was conducted at the experimental farm of Cotton Research Institute of Chinese Academy of Agricultural Sciences in Anyang, Henan. 1997 and 1998 for two consecutive years in the 3-2-type 140cm-wide wheat and cotton fields to conduct experiments, set cotton 100cm, set: ① cotton and wheat rows spacing 35cm, cotton narrow row spacing 30cm, mulching; Cotton and wheat rows of 25cm spacing, cotton spacing 50cm, mulching;