编辑同志:你刊1975年第3期登载的河南省鹤壁市郊区生产指挥部写的《桐树叶诱杀地老虎》一文,引起我们的重视。我们按照这篇短文介绍的方法,于5月16日在我校农场棉田试验,结果因田中地老虎发生不多,诱杀数量不多,但却发现每张桐树叶背面都粘有有翅蚜,多者一叶达50多头,有的叶子正面也有少量蚜虫,并且所粘的有翅蚜绝大多数都已死了。接着我们又试验一次,结果与上 Editor’s Comrade: You published in 1975, No. 3, published in Hebi City, Henan Province, Suburb production headquarters written “Tung tree leaves to kill the tiger,” a paper, aroused our attention. In accordance with the method described in this essay, we tested the farm cotton field on our school on May 16, and as a result of the small number of tigers in the middle part of the field and the small amount of trapping and killing, we found that there was a winged aphid on the back of the tung tree leaf, More than a leaf of more than 50 heads, and some positive foliage also have a small amount of aphids, and the sticky winged aphids most have died. Then we test again, the result and the last