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甘肃张掖地处河西走廊中部,有生产种子优越的地理优势,光照充足,昼夜温差大,种子颗粒饱满,质量好,深受广大制种单位青睐,全区有近二十余家制种单位在此繁育种子。厂大农民从中收益匪浅。但因制种技术掌握不当给生产带来不少经济损失。笔者经多年生产探索实践,在河西地区棉花制种中屡获成功,本文即对此法作一系统小结。 一、播前土壤准备 未灌冬水或土壤墒情较差的地块,应在播前5—7天灌足定根水。待地表发白时进行浅耕,结合耕作,每亩用甲基导柳磷300—450ml掺细沙20kg均匀撒施以防地下害虫。用48％地乐胺乳油100ml掺细沙
Gansu Zhangye is located in the middle of the Hexi Corridor, producing superior geographical advantages of seeds, adequate lighting, large temperature difference between day and night, full of seed particles, good quality, favored by the majority of seed production units, the region has nearly more than twenty seed production units in This breeding seed. Farmers benefit greatly from the plant. However, due to improper seed production techniques to produce a lot of economic losses. The author after years of exploration and practice of production, in Hexi area, the success of the cotton seed production, this article is a systematic summary of this method. First, pre-sowing soil preparation is not irrigation winter soil or soil moisture poor plots, should be 5-7 days before sowing prickly root root water. To be pale when the surface of the shallow tillage, with farming, per mu with methyl Liu Liu phosphorus 300-450ml fine sand 20kg sprinkle evenly to prevent underground pests. With 48% toleramide EC 100ml fine sand