【摘要】 通过田间对比试验,研究了稻鸭共作技术对稻田水体环境性质的影响.结果表明:稻鸭共作能够降低稻田表层水体的温度与pH值,提高电导率、氧化还原电位、混浊度和总氮、总磷、总钾三大营养元素的含量,其中总氮、总磷、总钾的含量分别比常规稻作增加1.85～5.06倍、2.01～8.70倍和42.79%～109.18%.说明稻鸭共作对改善水体理化性质、提高有效肥力供应,进而优化稻田生态环境和促进水稻的生长发育均具有积极作用.更多还原

【Abstract】 Field experiment was conducted to investigate the effects of rice-duck farming on the water environment in paddy field.The results showed that under rice-duck farming,the temperature and pH value of the surface water in paddy field decreased,and the electrical conductivity,oxidation-reduction potential,turbidity,and the contents of nitrogen(N),phosphorus(P)and potassium(K)increased.The total N,P,and K increased by 1.85-5.06 times,2.01-8.70 times,and 42.79%-109.18%,respectively,as compared to those in conventional rice farming.All of these illustrated that rice-duck farming improved the paddy field water environment and nutrient supply,optimized the ecological environment of paddy field,and promoted the growth and development of rice.更多还原