论文部分内容阅读
疏附县棉花播种面积约14893公顷,因其所处的自然条件和地势的差异,对棉花生长有一定影响。1998年4月,调查部分下潮地发现棉花烂种缺苗的现象存在,针对这一情况分析如下:(一)棉花烂种的表现形式1.种子霉烂由于地下水位高,种子所吸收的水量多,会加速种胚中所含的脂肪、蛋白质、糖类的分解,从而促进呼吸作用,在这一过程中所释放的热量反过来不能促进各种酶的活动和种子的呼吸,由于CO_2大量增加氧气补偿不足,种子往往不能正常呼吸,使其在代
Shufu County cotton sown area of about 14,883 hectares, because of its natural conditions and topography differences, cotton growth has a certain impact. In April 1998, the survey found that there was some cotton seedling shortage in some of the declining tide. According to this situation, the analysis was as follows: (1) The manifestation of the cotton rotten seeds 1. The rotten seeds Due to the high groundwater level, the amount of water absorbed by the seeds And more, will accelerate embryo contained in the fat, protein, carbohydrate decomposition, thereby promoting the respiration, in the process of the release of heat in turn can not promote the activity of various enzymes and seeds of the respiration, as a large number of CO 2 Increasing the lack of oxygen compensation, the seeds often can not breathe, making it on behalf of