草坪中蜗牛和蛞蝓的发生规律与防治技术

蜗牛和蛞蝓是三叶草草坪上的主要有害动物，直接影响绿化景观的观赏价值和人居环境。蜗牛和蛞蝓喜阴湿，春秋季节发生比较严重。试验应用密达颗粒剂毒饵诱杀同型巴蜗牛效果较差，不宜推广应用；诱杀野缨蛞蝓的效果达90％左右，其用药量以7．5kg／hm^2为宜，可推广应用，但成本较高。应用碳酸氢铵50倍液防治这两种有害动物的效果均在95％以上，此法成本低，效果快，无污染，对植物安全，且有一定肥效，是一项环保措施，应首选应用。防治蜗牛和蛞蝓应采用综合防治的措施，人工捡拾蜗牛和春季耙除枯黄枝叶、5～7月保持土壤干旱，都是防治这两种有害动物的有效办法。

Occurrence Regularity and Control Technique of Snail and Slug in Lawn

Bradybaena similaris Ferussac and Deroceras(Agriolimax) agreste Linnaeus are the main pests in lawn of Trifolium repens L.,their damages affected directly on the afforest landscape of lawn and environment of people living.These pests fond of dark and moist habitat and occurred seriously in spring and autumn.The results of this experiment showed that effect of Meta palletized granule traped and killed Bradybaena similaris didn't better than that of Deroceras(Agriolimax) agreste,the control effect of it to the later reached 90% at dosage 7.5 kg/hm2.The effect of 50 fold NH4HCO3 dilution solution reached 95% on snail and slug.So NH4HCO3 should be applied because its lower cost,rapid efficacy,unpollation and fertilization.The measures of artifical pick up snails and clear away withered leaves in spring,maintain dry soil of lawn in May~July all are very effective against the pests.In conclusion,the integrated control should be adopted in the management of the lawn pests as snail and slug.