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一、试验目的:目前不少植棉单位在采摘籽棉时,常有摘生花的现象,即在棉铃未正常全部开裂前,就把籽棉收获。通过试验,了解本棉区的棉铃在不同开裂时期,其纤维的重量和品质变化的情况。从而掌握棉花的适宜采摘期,探讨棉纤维、纤维素积累的过程。二、试验方法:1.以我县正常棉田为取样田块。2.取样时间为10月上、中旬,品种岱字15,吐絮期为中潮。3.随机选择塔位,节位基本相同,成熟度较为一致的正常棉桃,从初裂到全部开裂,定期随机取样,各次取样数量相同。4.将分批取得的籽棉小样自然摊晒到相同含水量(8%)后,测试有关产、质量指标
First, the purpose of the experiment: At present, many cotton-growing units in the picking of seed cotton, flowers often pick the phenomenon that the cotton boll is not normal before cracking, put the seed cotton harvest. Through the experiment, understand cotton bolls in this cotton area in different cracking period, the fiber weight and quality changes. In order to grasp the appropriate picking period of cotton, to explore cotton fiber, cellulose accumulation process. Second, the test method: 1. Take the normal cotton field in our county as sample plots. 2. Sampling time for the month of October, mid-Dai Dai word 15, boll opening period for the tide. 3. Randomly select the normal tower with the same node position and the same maturity, and randomly select the sample from the initial cracking to the complete cracking at the same time. 4. The seed cotton samples obtained in batches of natural drying to the same water content (8%), the test of production, quality indicators