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目前全国在观测小地老虎落卵方法上,有杂草(刺耳菜)上查卵、地面查卵、淘土查卵、棕皮片诱卵等4种。我们在实际工作中深感上述方法因工作量大、获得卵量太少,而不能正确反映客观情况。1994年我们利用小地老虎成虫喜在作物根毛上产卵的习性,采用麻袋片谤卵获得成功。1994~1995年连续2年实际应用,均获得良好效果。现将具体作法介绍如下,供各地参考。
At present, there are 4 methods for oviposition of small tigers in the country, such as checking eggs on weeds (spicy vegetables), checking eggs on the ground, finding eggs by smearing soil, and oviposition of brown skins. In the actual work, we feel that the above method has too little work load and too little ova to correctly reflect the objective situation. In 1994, we used the habit of young Tigers to spawn on crop root hairs, and succeeded in sacking eggs with sacks. 1994 to 1995 for two consecutive years of practical application, have achieved good results. Specific practices are introduced below, for reference.