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将稻－萍－鱼共生体系的综合耕作技术引入山垄稻田。试验结果表明：山垄稻田中草鱼、尼罗罗非鱼以红萍为饵食，其鲜鱼产量分别达3568kg／hm2和3702kg／hm2;中稻和再生稻产量分别达5710～6006kg／hm2和3478～3772kg／hm2，比施化学氮肥处理区分别提高689．0～1132．5kg／hm2和458．4～658．9kg／hm2。15N试验结果显示：在稻萍鱼体系中鱼体和水稻对红萍氮总利用率达52．8％～57．9％．而施用化学氮肥处理区的水稻对氮素利用率仅为33．5％。连续两年实施稻萍鱼共生体系耕作技术．山垄田土壤有机质平均提高0．15％，且整个耕作体系病情指数下降42．1％～50．7％．减少农药施用量，有助于生态环境改善，达到增产增收的目的。
INTEGRATED TILLAGE TECHNIQUE OF PADDY - PING - FISH Symbiotic System Into Mountain Ridge Paddy Field. The results showed that the grass carp and nile tilapia fed on Rhododendron in mountain ridge rice fields had the fresh fish yields of 3568kg / hm2 and 3702kg / hm2, respectively. The yields of middle and re-ratooning rice reached 5710 ~ 6006kg / hm2 and 3478 ~ 3772kg / hm2, respectively. Compared with the chemical nitrogenous fertilizer treatment area, 689.0 ~ 1132.5kg / hm2 and 458.4 ~ 658.9kg / hm2.15N increased respectively. The results showed that: Ping nitrogen utilization rate of 52.8% ~ 57.9%. However, the utilization of nitrogen by chemical nitrogen fertilizer treatment area was only 33.5%. Two years of implementation of rice paddy symbiosis farming system. Soil organic matter in mountain ridge fields increased by 0.15% on average, and disease index of the whole farming system decreased by 42.1% -50.7%. Reduce the amount of pesticides, contribute to the improvement of ecological environment, to achieve the purpose of increasing production and income.