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棉花种子质量的好坏,不仅影响到播种后的田间出苗率、成苗率,而且也是夺取棉花高产的基础。由于棉花种子在发育过程中所处的环境条件不同,因而种子质量差别极大,为了探求不同棉花品种作为种用的最佳采收期,我们进行了此项试验。一、材料和方法本试验材料选取1988年我县棉花原种场品比田中的3个品种:3138、鄂荆92、鄂荆1号。上述3个品种是目前我省江汉平原棉区大面积推广或即将推广的品种,它们的生育特性略有不同,3138和鄂荆1号两品种后劲较足,早秋桃发育较好,鄂荆92则前期上桃快,后期长势较差。试验采样分4期进行,(由于8月中下旬雨水较多,8月25日以前
Cotton seed quality is good or bad, not only affects the field after sowing germination rate, seedling rate, but also to seize the basis for high-yield cotton. Due to the different environmental conditions in the development of cotton seeds during seed development, the seed quality varies greatly. In order to explore the best harvest time for different cotton varieties, we conducted this experiment. First, the material and methods The test materials selected in 1988 my county cotton original field than the field of three varieties: 3138, 92 E Jing, Jing 1. The above three varieties are now widely popularized or soon to be popularized in Jianghan plain cotton area in our province. Their reproductive characteristics are slightly different. The two varieties of 3138 and Nojiao 1 have better stamina and early autumn peach development. Jinggang92 The early peach fast, poor late growth. Test sampling points 4, (due to more rain in late August, August 25 before