钉螺复燃水垛上桃园地“保桃灭螺”措施及效果

"Protecting peaches and controlling snails" in peach gardens with re-emerging snails and its effectiveness at control

2006年4月在无锡市惠山区郊区发现钉螺复燃地块,有螺地块面积达87 580 m2,钉螺密度最高60只/0.11m2,平均1.27只/0.11 m2(1341/1060)。根据桃园内外不同环境采用不同的灭螺方法,桃园地块结合"伏灌"、"冬灌"及桃农正常生产活动,采用"保桃灭螺"方案,第1年较常规灭螺方案成本节约83.06%;连续灭螺3年后,未发现活螺,有螺地块面积及活螺密度下降率均为100.00%。

A re-emerging snail habitat was found in the suburbs of Huishan District in the City of Wuxi in April 2006,with a snail area of 87 580 m2.The highest density of snails was 60 snails/0.11 m2,and the mean density was 1.27 snails/0.11 m2.Various snail control strategies were used in accordance with different environments inside and outside of peach gardens.A strategy of ＂protecting peaches and controlling snails＂ was used in peach gardens in combination with irrigation and regular peach production.In comparison to the normal snail control strategy,this new strategy produced savings of 83.06% of the costs of snail control in the first year.After 3 years,no living snails were found,and the rates of reductions in both snail areas and density of living snails were 100%.