稻鸭复合种养模式对水稻产量及其构成因素的影响

Effects of Rice-duck Compound Breeding Model on Rice Yield and Its Component Factors

稻鸭共生种养不仅能生产无公害的有机农产品,而且对水稻增产具有一定效果。在稻鸭共生基础上,加入鱼、萍、泥鳅、鸡等生物形成稻鸭复合种养模式,比较稻鸭复合种养模式下水稻产量及成熟期地上部分生物量的差异。试验共设6个处理:稻-鱼-鸭、稻-鱼-鸭-萍、稻-鳅-鸭、稻-鳅-鸭-萍、稻-鸡-鸭、稻-鸡-鸭-萍,以常规稻作对照。结果表明,与对照比较,稻鸭复合种养模式下水稻平均增产9.8%,尤以稻-鸡-鸭-萍处理产量最高,增幅达到18.11%;稻-鱼-鸭处理增幅最小,为4.96%;有效穗、结实率以及总粒数等均呈现不同程度的增长;地上部分生物量总和也普遍高于常规稻作,以稻-鸭-鳅处理最高,稻-鸡-鸭处理最低,说明稻鸭复合种养模式有利于水稻增产增收。

The rice-duck symbiotic breeding model can not only produce pollution-free organic agricultural products,but also has a certain effect on rice yield increase. On the basis of rice duck symbiosis,this study added fish,duckweed,loach,chicken and other organisms to form a hybrid rice duck breeding model,and compared the differences in aboveground biomass of rice yield and maturity in rice-duck composite breeding mode. There are six treatments and one control in the experiment： rice-fish-duck,rice-fish-duck-duckweed,rice-loach-duck,rice-duck-loach duckweed,rice-chicken-duck,rice-chicken-duck-duckweed,and conventional rice（ CK）. The results showed that the average yield of rice increased by 9. 8% under the rice-duck compound breeding mode,especially the yield of rice-chicken-duck-duckweed model increased by 18. 11%; and the treatment of rice-fish-duck had the smallest increase of 4. 96%. The effective panicle,seed setting rate and total grain number increased in different degrees,the sum of the aboveground biomass was also generally higher than that of conventional rice,the highest treatment was rice-duck-loach,and the lowest treatment was rice-chicken-duck,which indicats that the rice-duck compound breeding mode is conducive to rice yield increase and income increase.