在棉花留叶枝栽培条件下,采用裂区试验设计,以种植模式为主区、以喷施不同植物生长调节剂为副区,研究了不同种植模式(单行种植、双行种植)和喷施新型增铃剂(其中,喷施缩节胺为药剂对照处理,喷施清水为空白对照)对棉花生长发育及产量的影响。结果表明:喷施增铃剂处理的主茎功能叶片光合能力(叶绿素含量和净光合速率)、茎粗、各部位果枝节数和铃数、产量构成因素(总铃数、单铃重、百粒重、子指)、产量和纤维品质(衣分、绒长)均跃CK,株高、果枝数、主茎节间长度和果枝长度均约CK,其中,双行种植模式在增加果枝数、单铃重、总铃数以及下部果枝长度和中、上部果枝载铃量方面优于单行种植模式,且较单行种植增产效果显著。新型增铃剂抑制棉花营养生长、塑造有利株型、改善田间通风透光条件的作用与缩节胺相同,但增强叶片光合性能、减轻蕾铃脱落、改善棉纤维品质以及提高产量的效果优于缩节胺,可作为缩节胺的替代产品使用。 Under the condition of cotton leaf-leaved cultivation, split-plot experiment design was adopted. The planting pattern was taken as the main area and different plant growth regulators were sprayed as the sub-area. The effects of different planting modes (single row, double row) The effects of bolting agent (spraying the shrink amine for the chemical control and spraying water as the blank control) on the growth and yield of cotton were studied. The results showed that photosynthetic capacity (chlorophyll content and net photosynthetic rate), stem diameter, number of branches and bolls in each part, yield components (total number of bolls, single boll weight, , Sub-index), yield and fiber quality (lint percentage and lint length) were all CK, plant height, number of fruit branches, main stem internode length and fruit branch length were about CK. Among them, Boll weight, boll number, lower fruit branch length, middle and upper fruit branch boll weight were better than single-line planting pattern, and the yield was more significant than single-line planting. The new bolting agent can restrain the vegetative growth of cotton, shape the favorable plant type and improve the field ventilation and light transmissibility, which is the same as that of shrink amine, but the effect of enhancing the photosynthetic performance of leaves, reducing the shedding of buds, improving the quality of cotton fiber and increasing the yield is better than Reduced amines, can be used as a substitute for amines.