稻田养鸭防控福寿螺的效果及对水稻产量的影响

为探寻稻田福寿螺的有效防控办法,研究了不同养鸭密度、不同放养时间和放养不同品种鸭对稻田福寿螺的防控效果及对水稻产量的影响.结果表明:当稻田养鸭时间为40 d时,对福寿螺的平均防治效果达到93.94%;当稻田养鸭密度在6～14只/(667m2)时,鸭子对稻田福寿螺的平均防效与养鸭密度和放养时间呈正相关,且平均水稻产量随着...

Effect of controlling the golden apple snail and of heighteningrice-output by breeding ducks in paddy field

In order to explore the effect of controlling the golden apple snail and heightening rice-output by breeding ducks of different kinds in paddy field, density and time of breeding ducks were investigated. Results showed that: The effect of controlling the golden apple snail was 93.94% when the time was 40 d. The effect on controlling the golden apple snail correlated positively with the density and time of breeding ducks when breeding density was 614/(667 m2) and average rice output increased with the increasing of breeding ducks, when the density reached 14/(667 m2), the controlling effect was the best. And the average rice-output attains tiptop. But when the density of breeding ducks was above 14/(667 m2), average rice output decreased with the increase of breeding ducks. The Jinding ducks exceled over the local sheldrakes distinct in controlling the golden apple snail and heightening rice-output.