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通过对常规稻作(CK)、稻鸭共作(A)、稻鱼共作(B)和稻蟹共作模式(C)连续3年的定位研究,分析土壤理化性质、水稻产量和品质及其总体经济效益。结果表明,在改善土壤物理性状上,C>A>B;在增加土壤速效养分和品质方面,A>C>B;稻田养鸭水稻产量降幅最小,稻蟹次之;A、B、C各处理总经济效益分别比常规稻作增收11 407.5元/hm2、4 312.5元/hm2和7 378.5元/hm2。说明,在北方寒冷稻作区,稻鸭共作在改善稻作环境、增加经济效益上优于常规稻作和其他两种稻作模式,可作为该地区稻作复合生态种养技术的主体模式推广和应用。
Through the three-year positioning research of CK, A, B and C together for three years, the soil physical and chemical properties, rice yield and quality, Its overall economic benefits. The results showed that: C> A> B in improving soil physical properties; A> C> B in increasing soil available nutrients and quality; rice duck ducks had the smallest decrease in yield, followed by rice crabs; A, B and C The total economic benefits of treatment were respectively 11 407.5 yuan / hm2, 4 312.5 yuan / hm2 and 7 378.5 yuan / hm2 higher than conventional rice production. This shows that in the northern cold paddy area, rice-duck cooperation is better than conventional paddy and other two rice-paddy models in improving the rice environment and increasing economic benefits, which can be used as the main mode of the paddy-rice composite ecological planting and breeding technology Promotion and application.