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1983年第2期刊出玉米新品种“湘凤单1号”后,我们从全国各地一千多封来信看出:同纬度的广西、贵州等地反映较好,小面积产量高的达1,400多斤。但由于该品种存在苗期长势弱、制种产量不高等弱点,现提出应注意的几个问题,以供参考。 (一)播种季节雨水较多的地区,非机耕地宜用锄头开沟播种,沟宜浅,沟底宜平,有利于出齐苗。机耕地播种量宜稍加大(每亩4斤),有利全苗。 (二)幼苗期叶片较短、窄,生长较慢,但6叶以后长势较快,苗叶青绿。因此,只要底肥足,不需重施苗肥,以利蹲苗。
After the publication of the new maize variety “Xiang Feng Dan No. 1” in 1983, No. 2, we read more than 1,000 letters from all over China that the same latitude of Guangxi and Guizhou reflected better, with a small area of more than 1,400 jin. However, due to the variety of seedling there is weak, seed production is not high and other weaknesses, it is proposed that we should pay attention to several issues for reference. (A) sowing season more rainy areas, non-arable land should hoe ditching sowing, ditch should be shallow, ditch should be flat, is conducive to Qi Miao. Planting sowing should be slightly larger (4 kg per mu), favorable seedlings. (B) seedling leaves shorter, narrower, slower growth, but the rapid growth after 6 leaves, seedling leaves green. Therefore, as long as adequate base fertilizer, no need to re-apply Miao, to facilitate squatting seedlings.