高产棉花生育规律及生理指标的研究

The Physiological Index and Developing Patern of High yield cotton

应用作物源库理论，研究北疆高产棉花的生育规律及生理指标，初步结果表明，高产棉花的生育进程必须适应北疆作物生长季节气温两头低中间高的特点，使结铃盛期与当地光温水最佳时段高度吻合。增加棉花群体冠层形成初期的叶面积指数（ＬＡＩ），盛铃期ＬＡＩ在３．２３～４，协调了源库关系，加快了高能期储积产品器官干物质积累速度，延长了积累天数，提高了经济系数，盛铃期为４８．５８％～５７．４７％，控制适宜果节数为９４．７～１０５．５个／ｍ２叶，增加了单位叶面积的载铃量、生殖器官干重，分别为２７．３８～３２．０３个／ｍ２叶、０．１６３７～０．２３０３ｋｇ／ｍ２叶，叶铃比２．５～３∶１。

The physilogical index and developing pattern of high yield cotton in Northen Xinjiang were dealt with by source-sink theory in the pape.It pointed out the features of high yield cotton about the leaf area index(LAI),the economic index(EI),the number of fruit node and the dry weight of generative organ per squace meter of cotton leaves.