湘潭地区不同稻田种植制度粮食生产效益比较

摘要

双季稻是湘潭地区稻田传统种植模式。为探索该地区稻田适宜粮食作物替代种植模式，在湘潭县易俗河镇比较了3种粮食作物种植制度（双季稻、早稻—秋玉米、春玉米—晚稻）的生产效益。结果表明：双季稻模式纯收入最高（16347.7元／hm2），其次是早稻—秋玉米（15332.1元／hm2），春玉米—晚稻模式总效益最低（14260.8元／hm2）。与双季稻模式相比，早稻—秋玉米模式经济效益下降不显著（降幅6.2％），人工投入少，且有水旱轮作的潜在优势，初步认为湘潭地区以早稻—秋玉米替代双季稻是可行的。%Double cropping rice is the traditional planting mode in paddy field in Xiangtan area.In order to explore the op-timal grain crop substitute planting mode in paddy field in this area,the production benefit of three grain cropping systems, double cropping rice,early rice -autumn maize,spring maize -late rice in Yisuhe town,Xiangtan county,were compared. The results showed that:the net income of double cropping rice mode was the highest (￥16 347.7 yuan/hm2 ),the next was early rice -autumn maize mode (￥15 332.1 yuan/hm2 ),and that of spring maize -late rice mode was lowest (￥14 260.8 yuan/hm2 ).Compared to double cropping rice mode,the economic benefit of early rice -autumn maize mode de-creased inconspicuously,while it need less labor input and has potential advantage in paddy -upland rotation.So the sub-stituting double cropping rice with early rice -autumn maize is feasible.