中棉所29与国抗36对2003年梅雨期涝渍的耐性分析

江汉平原是我国主要产棉区,但在梅雨期间,因降水集中,强度大,极易对棉花造成涝渍灾害。2003年梅雨量达411mm,较历年同期偏多5成,导致全市皮棉大面积减产。通过对中棉所29与国抗36品种的气候生态适应性试验,着重对2个品种在梅雨期涝渍危害后的恢复状况等方面进行了分析。试验结果表明:中棉所29在梅雨期涝渍的气候条件下,比国抗36有着明显的增产优势,该品种适宜在江汉平原种植。通过分析,提出了相应的抗避灾对策。

Analyse of the Endurance of "Zhongmian 29" and "Guokang 36" to Waterlogging during Plum Rain Period in 2003

The Jianghan plain is the main cotton growing area in our country.During the plum rain period, the precipitation is centralized and the intensity is heavy, which is extremely apt to cause the waterlogging calamity to the cotton.In 2003 the plum rain amount was 411mm,fifty percent more than the same period of the normal year,which resulted in a big drop in cotton production on a large scale over Jingzhou city.Through the experiment in the climate ecological adaptability of "Zhongmian 29" and "Guokang 36"and their recovery ability after the waterlogging was analyzed.The result showed: "Zhongmian 29"damaged by waterlogging had obvious advantage of increasing production than that of "Guokang 36",and"Zhongmian 29"was suitable for planting in the Jianghan plain.Through the analyse,some corresponding countermeasures were put forward.