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研究了麦后夏播棉的促早避霜技术。麦后夏播棉有效开花结铃期短而集中 ,总结铃数的73 3%～ 88 9%集中在 7月 31日～ 8月 14日之间。山西南部适宜种植的密度为 12万～ 15万株 /hm2 。筛选出运 379(3)h、晋棉 17号等早熟品种。喷施避霜剂 (壮早丰 ) ,可以降低株高 ,塑造理想株型 ,促进早熟 ,皮棉增产 9 74 %。麦后夏播棉避霜技术应采用早熟品种、早播种、早施肥、早灌水、高密度、早打顶、喷施壮早丰和乙烯利 ,及早防治病虫害的技术体系
Study on wheat early summer after the anti-frost cotton technology. Wheat after the summer cotton boll effective flowering period of short and concentrated, the number of bolls 73 3% ~ 88 9% concentrated in the July 31 to August 14 between. The density suitable for planting in southern Shanxi is 120,000 ~ 150,000 plants / hm2. Selected shipped 379 (3) h, Jinmian 17 and other precocious varieties. Spraying frost-proof agent (Zao Fengfeng), can reduce plant height, shape the ideal plant type, promote early maturity, lint yield 9 74%. Summer wheat after the wheat straw frost repellent technology should be used precocious varieties, early sowing, early fertilization, early irrigation, high-density, early top, spraying strong premature abundance and ethephon, early prevention and control of pests and diseases of the technical system