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试验结果表明,稻草还田免耕抛秧稻田养鱼生态技术,具有明显的生物除草、灭虫、防病、降低水稻发病率的作用,可以减少农药与化肥的施用量,改善稻田土壤理化性状,是一项理想的生态环保型农业生产技术。免耕稻田养鱼可提高水稻有效穗数、穗总粒数、穗实粒数、结实率,进而提高水稻产量,可增产6%~12%。同时,还可以多收鲜鱼600~750 kg/hm2,可增值4 500~9 000元/hm2。综合本试验各放养鱼模式,免耕稻田养鱼每公顷平均产值19 969.8元/hm2,纯收入10 771.05元/hm2,比对照增加5 986.8元/hm2,增长125.14%。
The results showed that the rice straw returning to the field without tillage and throwing rice seedling ecological technology, with obvious biological weeding, pest control, disease prevention and reduce the incidence of rice, can reduce the amount of pesticides and fertilizers to improve the physical and chemical properties of paddy soil , Is an ideal eco-friendly agricultural production technology. Fish farming in no-tillage rice can increase the effective panicle number, total spike grain number, spike grain number and seed setting rate of paddy rice, and then increase the rice yield, which can increase 6% -12%. At the same time, you can also overcharge fresh fish 600 ~ 750 kg / hm2, can increase the value of 4 500 ~ 9 000 yuan / hm2. Based on the results of each fish-feeding experiment, the average output value per hectare of no-tillage rice farming was 19 969.8 yuan / hm2 and the net income was 10 771.05 yuan / hm2, an increase of 5 986.8 yuan / hm2 compared with the control, an increase of 125.14%.