棉花化学调控的产量效应及成因初探

Preliminary Research on Yield Effects and Its Component Factors of Cotton Chemical Regulation

１９９２～１９９６年每次用固定剂量的三种植物生长调节剂在棉花盛蕾至花铃期喷施１～２次。５ａ产量结果经方差分析表明：群体产量效应与密度、单株产量、调控时期、次数等因素密切相关，由增产极显著、增产显著、平产、减产到减产显著，呈现规律性变化。

Three kinds of plant growth regulator were sprayed upon cotton one or two times per year from peak square time to flower time during 1992～1996. The results of variance analysis to five years' yield showed: the population yield is closely related to density, single plant yield,regulated date and regulated times, and changed regularly as follows: significantly increase yield,increase yield, equal yield,decrease yield,signifcantly decrease yield. To make a systematic analysis to its component factors, accordingly, provided a theoretical and technical basis for gaining significantly increase yield of chemical regulation on cotton.