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在特大干旱的1991年,襄汾县有6000多亩棉花平均亩产皮棉132.2公斤.对部分高产棉田的产量结构,群体株型,成铃时空分布特点、生物学产量和经济学产量等进行了调查研究.提出亩产125公斤皮棉的技术路线是:增大密度(6000～7000株/亩),优化株型(株高80厘米、节间长5厘米、果枝10个、叶小),调整成铃时空分布(第一高峰期7月1～31日成铃70%以上.一二节位内围铃占90%以上),稳定生物学产量(800公斤/亩),增加经济学产量(子棉325公斤/亩),提高经济系数(0.4左右).
In the extremely arid area of 1991, Xiangfen County had an area of 6000 hectares of cotton averagely producing 132.2 kg of lint, and the yield structure, population and plant type, spatiotemporal distribution characteristics, biological yield and economic yield of some high-yielding cotton fields Investigation and Research. The technical route for raising 125 kg of lint per mu is to increase the density (6000-7000 plants / mu), optimize the plant type (plant height 80 cm, internode length 5 cm, fruit branch 10, leaves small) The spatial and temporal distribution of bells (the first peak is more than 70% of the bells in July 1-31, the bells of more than 90% in a second node), the stable biological yield (800 kg / mu) and the increase of economic output Cotton 325 kg / mu), increase the economic coefficient (0.4 or so).