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1992~1994年针对黄淮海棉区棉麦两熟套种棉花迟发晚熟进行不同配置方式的田间试验研究。结果表明,不同配置方式棉行光分布型不同,宽窄行配置方式棉行光分布呈宽的“凸”字型,等行配置方式棉行光分布呈偏而窄的“凸”字型。共生期间棉茬小麦正处在生长发育旺盛期,丰产小麦株高从55cm增加到85cm,旗叶和旗下2叶披出宽度达到20cm,单位面积株数、单株叶面积和叶面积系数均达到最大并随后逐渐消减,4种配置方式全共生期棉行日总受光量仅为46.6%±13.2%,棉花受光量仅为53.9%±7.6%,光合有效辐射预留棉行为408.28±115.53μmolm-2d-1,棉花为473.59±66.85μmolm-2d-1,分别比一熟棉田减弱53.4%±13.2%和46.1%±7.6%。这些结果说明,套种棉花共生期光热资源严重不足是客观存在的,但处理间存在明显的差异。棉茬小麦选择东西行向,推广垄作和选用矮秆小麦品种,采用标准3─2式或4─2式配置方式有利于共生期预留棉行获得较多的光热资源,促进棉花早发。
A Field Experiment Study on the Late Maturity and Late Maturity of Cotton with Two Wheat and Wheat Interplanting in Huang-Huai-Hai Mian Region from 1992 to 1994 in Different Configurations. The results showed that the light distribution pattern of cotton fabric was different with different configuration, and the light distribution of cotton line with wide and narrow lines was wide “convex”. During the symbiotic period, the cotton crop is in a period of vigorous growth and development. The height of high-yield wheat increased from 55cm to 85cm, the leaf width of the flag leaf and its two leaves reached 20cm, and the maximum number of single plant leaf area and leaf area index And then gradually diminished. The total daily light receiving capacity of all-lifetime cotton plant in the four configurations was only 46.6% ± 13.2%, while that of cotton was only 53.9% ± 7.6%. The photosynthetically active radiation The cotton lines were 408.28 ± 115.53μmolm-2d-1 and 473.59 ± 66.85μmolm-2d-1 respectively, which were 53.4% ± 13.2% and 46.1% ± 7 .6%. These results indicate that there is an objective existence of a serious shortage of light and heat resources in inter-symbiotic cotton intercropping, but there are obvious differences among treatments. Cotton stubble wheat choice east-west line, the promotion of ridge and the selection of dwarf wheat varieties, the use of standard 3 ─ 2 type or 4 ─ 2 configuration is conducive to symbiotic cotton plant set aside more access to light and heat resources to promote early cotton .