一、棉花杂质问题解放以来,减少棉花含杂,提高棉花质量,已取得很大成效,但我们仍提出在采摘,收购加工等工作中注意降低棉花杂质含量,以提高棉花的纺织使用价值。棉花为什么会含有杂质呢?归纳起来,有下列原因:(1)棉花吐絮时,因风砂吹袭尘砂土粒吹入棉絮。(2)棉花生长田间,风吹雨打,将棉絮吹落地上,沾染泥污。(3)收摘棉花吋,将苞叶、 First, cotton liberation since the issue of liberation, reducing cotton hybrids, improve the quality of cotton, has made great achievements, but we still proposed in the picking, acquisition and processing work to reduce the cotton content of impurities in order to improve the value of cotton textile. Why does cotton contain impurities? To sum up, the following reasons: (1) cotton boll, due to wind sand blown sand particles blowing into the cotton wool. (2) cotton growing field, the wind and rain, the cotton blown to the ground, contaminated mud. (3) harvest cotton inch, the bracts,