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本文总结了广东三水县根据不同地形和环境,采取了不同灭螺方法的效果。发现:①围而不垦可使钉螺密度逐年下降,螺死亡率逐年增高;②垦植而不围收到了较好的灭螺效果;③围垦不种植者,钉螺密度下降后可回升,若加用五氟酚钠处理,效果较好;④围垦种植,旱地要求精耕细作,种短期收获作物增加复种次数;水田则三面光铲埋田基,效果均甚好;⑤筑水库水淹灭螺效果好,又有利生产;⑥沙埋灭螺效果好;⑦铲埋灭螺,田基“三面光”,水沟“七面光”效果较好;⑧火烧灭螺可能由于燃料铺放不匀或不足,效果欠佳;⑨五氯酚钠效果虽亦好,但药价高,有毒副作用,不宜单独使用。
This article summarizes the effects of different methods of snail control in Sanshui, Guangdong, depending on the topography and environment. The results showed that: (1) The density of snail declined year by year without the reclamation of cultivated land, the mortality rate of snail increased year by year; (2) The reclaimed land was not enclosed and the better snail-killing effect was received; (3) With sodium pentafluorophenol treatment, the effect is better; ④ reclamation planting, dry land requires intensive farming, short-term harvest of crops to increase the number of multiple cropping; paddy fields are three light shovel the foundation, the effect is very good; ⑦ sand shrub buried mollusc, Tianji “three sides light”, gutter “seven light” better effect; ⑧ fire snail may be due to uneven or inadequate fuel spread, Poor results; ⑨ pentachlorophenol sodium effect is good, but high drug prices, toxic side effects, should not be used alone.