【摘要】 通过 １９９１ ～１９９３ 年对山西 棉 区密 度、化控、氮磷 钾 营养 、头 水运 筹 等关 键 技术 的 研 究结果，提 出了以大 群体小个 体增结 第一二节 位优质 大铃为主 要内容 的早 发早 熟抵 抗（ 避） 气 候逆 境胁迫的促 早抗逆 栽培理论 ，形成了 以高 密化控（ 密度 ９０ 万 ～１０５ 万株／ｈ ｍ ２ 和 Ｄ Ｐ Ｃ３ ～４ 最佳 组合）为核心 ，配合相 应的氮磷 钾营养 和提 早 运筹 水肥 的 高产 稳产 技 术体 系。 连续 ５ 年 大 面积 应用 ，取得显著 增产效 应（ 产量达 １ ８００ ｋｇ／ ｈ ｍ ２ 以 上） 和社会 、经济、生 态效益 。更多还原

【Abstract】 The expriments were conducted from 1991 to 1993 to study the effects of key techniques such as planting density, chemical regulation, N, P, K, fertilizers and time of first water irrigation under the stress of weather on the yield and qualities of cotton in Shanxi privince. The results showed that first 1-2 noder and bollforming rate could be increased with planting density. Higher photosynthetic efficiency, good population type and canopy structure with dwarf plant, short sympodia, smaller leaver and bigger bolls could be obtained by chemical regulation. On the bases of higher population density with dwarf plants, chemical regulation, good quality and bigger bolls of on 1-2 nodes increased, early sowing could prevent from the stress of weather Early sowing combined with high population density and chemical regulation and with early water irrigation and fertilizer (N, P, K) dressing produced a high and stable yield. The theory have been applied to practice in large scale for 5 years and gainded significant yield increase, economic, social and ecological benefits.更多还原