摘要
进行了采用除早蕾新技术创造多结伏桃、早秋桃最佳结铃模式的研究。栽培的中熟品种的伏桃、早秋桃的结铃期约40天,采用人工除早蕾技术,与常规植棉技术相比较,能节约输向早期蕾铃的养分,根系伤流液量、叶片叶绿素含量和光合作用强度均增加,地下地上生理活性增强,每亩增产皮棉5～18%,但化学药剂除早蕾效果不稳定。
The picking early floral buds of cotton plants is an efficient regulating technique, which brings profound changes to the boll-setting model. As compared to the ordinary farming model, which pays equal attention to presummer-bolls, summer-bolls and autumn-bolls, the new model pays more attention to summer-bolls and early-autumn-bolls, but fewer to pre-summer-bolls and late-autumn bolls.The technique of picking early floral buds has brought cotton plants more b(?)lls, greater weight per boll, and higher quality of lint characters, and above all, obviously more economic benefit. It was discovered that the effect of piching early-floral buds was to reduce the organic maferial transported to the pre-summer-bolls, to raise the chlorophyll content in the leaves, and to promote above and under ground physiological activity of cotton plants.
关键词
结铃模式
结铃期
棉花
除早蕾
Boll-settiug model
Boll-setting period
Compesated eppect
Picking early Ploral buds
