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1962年4月25日在国营恆湖垦殖場选擇了几种类型地区,进行了现場实驗,并檢查了螺情,以資比較。实驗方法 (一)网撈法:篩絹(孔徑30×30微米)作成口徑10公分,长14.73公分)从网的尖端剪除0.73公分作为开口)的网,撈蚴时,网口稍斜,其直徑与水面平行,以1米/分的速度,逆风、逆水移动,前进110.9公分算一平方市尺,出水时慢慢提起,用5％福尔馬林固定网上尾蚴,除去夹子,用水(現場水經过泸)自网內外向下冲洗,水量冲至500C.C.。 (二)紗粘法:圆形篩絹(孔徑同上)直接11.87
On April 25, 1962, several types of areas were selected at the State-owned Henghu Reclamation Site. Field experiments were conducted and the snail status was checked for comparison. Experimental methods (a) net fishing law: sieve silk (aperture 30 × 30 microns) made of caliber 10 cm, length 14.73 cm) cut from the tip of the net 0.73 cm as the opening net), larvae, the net port slightly inclined, its Diameter and the water parallel to the speed of 1 m / min, headwind, reverse the water move forward 110.9 cm count a square foot, slowly raised water, with 5% formalin fixed net cercariae, remove the clip, water (on-site Water after Lu) Flush from inside and outside the net down to 500C. (B) yarn sticky method: round sieve silk (aperture above) 11.87 directly