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杂交高梁制种技术比较复杂,要求高,有些单位常因不利的土壤条件、有害的天气、制种技术掌握不好等引起小花败育和坐苗,导致制种失败.因此,解决3197A坐苗问题已成为高粱制种的一个关键.1979年,我们在一块迎茬地上做了施肥与3197A坐苗关系的试验.结果,在施同样农肥、磷肥的基础上,施复合肥(芬兰产,含氮15%、磷15%、钾12%)和不施复合肥差异很大.施复合肥的没有产生坐苗,长势强.7月9日调查,3197A平均株高68.4厘米,与父本叶片差数适当,有12.1片叶,27.2条根,后期花期基本相遇,平均亩产杂交种242斤;没施复合肥的,坐苗严重,株矮叶少,平均株高27.9厘米,9.2片叶,8.6条根,和父本叶片差数大,出现花期不遇,造成毁种.
Hybrid sorghum seed production technology is more complex and demanding, some units often due to unfavorable soil conditions, harmful weather, poor seed production techniques caused by abortion and sit seedlings, resulting in seed production failure.Therefore, to solve 3197A sitting seedlings The problem has become a key to sorghum seed production. In 1979, we conducted a test on the relationship between fertilization and planting 3197A in a stubble field. As a result, applying compound fertilizers and phosphate fertilizers (Finnish, Nitrogen 15%, Phosphorus 15%, Potassium 12%) and no significant difference between the application of fertilizer. Shi Fu fertilizer did not produce sit Miao, growing strong .7 July survey, 3197A average height 68.4 cm, and paternal leaf The difference is appropriate, there are 12.1 leaves, 27.2 roots, the late flowering basically met, the average yield of 242 acres of hybrids per hectare; no fertilizer, sit seeding serious, less plant leaves, the average height of 27.9 cm, 9.2 leaves , 8.6 root, and the difference between the father leaves large, there is a flowering period, resulting in destruction of species.