稻鸭种养模式减肥减药生态效益研究

目的]研究稻鸭种养模式减肥减药生态效益。方法]采用随机区组排列,分别设置3个处理:稻鸭种养、不养鸭种稻(CK1)、常规法种稻(CK2),研究不同处理对水稻纹枯病和稻田杂草的防控效果,以及对水稻产量性状、经济效益的影响。结果]稻鸭种养处理对水稻纹枯病具有显著的防控效果,在分蘖盛期和齐穗期丛发病率分别为22.1%和38.2%;稻鸭种养处理对稻田杂草有较好的控制效果,放鸭后50 d,杂草干重为4.5 g/m2;稻鸭种养处理的理论产量为8 379.5 kg/hm~2,显著高于CK1;稻鸭种养模式的整体利润高于CK1、CK2。结论]稻鸭种养可促进水稻健壮生长,减少化学肥料和农药的投入,保护生态环境,值得推广。

Study on Ecological Benefits of Reducing Weight and Reducing Drug in Rice Duck Breeding Model

Objective] To study the ecological benefits of reducing weight and reducing drugs in rice duck farming mode . Method] The randomized block arrangement were set up 3 treatments:rice duck planting, without duck rice (CK1), rice by conventional method (CK2), the control effects of different treatments on rice sheath blight and rice field weeds were studied, and the effects on rice yield characters and economic benefits were also studied.Result]Rice duck planting treatment has a significant effect on prevention and control of rice sheath blight, the incidence of cluster were 22.1％ and 38.2％ respectively at tillering stage and heading stage;rice duck farming treatment had better control effect on weeds in rice field, and the dry weight of weeds was 4.5 g/m2 after 50 d; the theoretical yield of rice duck farming was 8379.5 kg/hm2 , which was significantly higher than that of CK1; the overall profit of rice duck farming model was higher than that of CK1 and CK2.Conclusion]Rice duck farming can promote the vigorous growth of rice, reduce the input of chemical fertilizers and pesticides, and protect the ecological environment, which is worth promoting.