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为了探讨棉籽播前干湿锻炼对棉花出苗和生长发育的影响,我们于1976—1977年在我校三结合试验地进行了试验。试验材料和方法供试品种,1976年系沪棉204,1977年系江苏棉1号。试验田设在我校地势较高、灌溉条件较差的红壤棉田。密度每亩5556株,株行距6×18寸。试验小区面积均为0.0177亩,各处理设一重复。除种子干湿锻炼与不锻炼差别外,其他管理均一致。具体方法:第一次浸水12小时(至种皮泡软为度),捞起风干,第二次浸约8小时(种皮已可泡软),再捞起风干后即可播种。种子浸种后自然风干由于时间较长,且常遇连阴
In order to investigate the effect of wet-dry exercise before cottonseed sowing on emergence and growth of cotton, we conducted a test in our triple combination test in 1976-1977. Test materials and methods for the test varieties, in 1976 Department of Hu cotton 204, 1977 Department of Jiangsu cotton 1. The experimental field is located in the red soil cotton field with higher terrain and poor irrigation conditions in our school. 5556 plants per acre density, spacing 6 × 18 inches. The experimental plot area is 0.0177 mu, each set a repeat. Except for the difference between wet and dry seeds and no exercise, other management is the same. Specific methods: the first soaking for 12 hours (to the kind of soft soak), picked up the air-dried, the second dip about 8 hours (the seed coat has soaked soft), and then picked up the air to sow. After the seed soaking naturally dried because of the longer, and often encounter even overcast