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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、棕皮片诱卵等四种。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。1981年我们利用小地老虎成虫喜在作物根毛上产卵的习性,采用麻袋片诱卵获得成效。1982—1984连续三年进行实际应用,1984年又在南阳、西陕两县进行异地验证,均获得了良好结果。地区已正式列为全区统一测报方法,现将具体作法介绍如下,供各地参考。
At present, there are four methods of oviposition in the observation of small tigers in the country, such as weeds (sphaeroides), eggs in the ground, eggs in the earth, eggs in brown soil, and eggs in 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 1981, we used the habitat of young tiger beetles to spawn on crop root hairs, and used sacks to induce eggs. 1982-1984 for three consecutive years of practical application, again in 1984 in Nanyang, Xishan two counties to conduct off-site verification, have received good results. The region has officially listed as a unified reporting method, the specific practices are introduced below, for reference.