中文摘要：

为解决湘中红壤稻田连年植棉后再种水稻生长不好的问题,通过田间小区试验,对湘中植棉的红壤稻田不同水旱轮作模式效应进行了研究。结果表明,与棉稻冬闲相比,稻田棉稻冬种青泥层出现部位低6.5cm、W层（淀积层）厚4cm,耕层体积质量小0.06g/cm3,孔隙度大6.1%,粉/黏比大0.19,砂/黏比大0.04,有机质质量分数高11.85g/kg;棉花全生育期相对土壤含水率均值高7.5%;地温变幅值小4.4℃;棉花（籽花）增产387.75kg/hm2,增产8.1%,差异显著;水稻增产864kg/hm2,增产20%,差异极显著;产出投入比由1.97提高到2.06~2.46,投入回报率提高4.6%~24.9%。

英文摘要：

In order to solve the problem of rice poor growth after successive planting in red paddy soil,field experiments were conducted to research the effects of the different rotation pattern of cotton in red paddy soil.The results showed that compared with winter fallow,under winter planting of the cotton rice,the blue mud layer was 6.5cm lower,the deposition layer was 4cm thicker,the soil volume quality was reduced by 0.06g/cm3,the degree of porosity was increased by 6.1%,the powder/viscosity ratio and sand/viscosity ratio was increased by 0.19 and 0.04,and the content of organic matter was increased by11.85g/kg;the mean water content in the growth period of cotton was 7.5% higher;the ground temperature range was 4.4℃lower;the cotton yield significantly was increased by 387.75kg/hm2;the rice yield was significantly increased by 20%;the output-input ratio ranged from 1.97 to 2.06~2.46;the return rate increased by 4.6%~24.9%.