关于棉种越夏使用问题,首先,棉种的价值与过去不同。以往棉种自留自用,国家调剂部分数量很小,而常规棉种本身的价值不高,没有保管越夏的必要,不为人们所重视,因棉籽不能做种还可榨油或做肥料。现在棉种生产由种子部门统一安排、收贮,一般余种数量都较大。尤其是杂交棉种,生产成本较高,如将当年剩余的种子转商,势必给企业造成严重经济损失,一旦余种就要慎重考虑和研究处理办法,最理想的方法就是安全越夏使用。其次,棉种的素质不同。过去棉花留种,只要是“白花”都轧作种用,棉籽早、中、晚期混为一体,而其中秋棉籽成熟度差、生活力弱,当然很难顺利越夏。现在收贮棉籽,要通过制种技术调节,再以收 On the use of cotton seed summer, first of all, the value of cotton seed is different from the past. In the past, cotton was used for self-use, and the quantity of the country’s adjustment part was small. However, the value of conventional cotton seed itself was not high and there was no need to keep the summer. It was not valued by people because cottonseed could not be used for oiling or fertilizer. Cotton seed production now unified arrangements by the seed sector, storage, the general number of species are larger. In particular, cotton hybrids, the higher the cost of production, such as the surplus of the year to the dealer, is bound to cause serious economic losses to businesses, once more species should be carefully considered and studied, the best way is to use safe summer. Second, the quality of cotton is different. In the past, cotton was planted as long as it was “white flower”, and cottonseed was mixed early, middle and late. However, the maturity of autumn cottonseed was poor and its vitality was weak. Of course, it was very difficult for it to pass the summer. Cotton seed storage now, through the seed production technology to adjust, and then to close