寄养田是近年来我省棉区在利用瓢虫防蚜方面的新发展。是有计划地扩大瓢源、争取治蚜主动权的途径之一。它具有方法简单、节省劳力和资金等优点,对寄养田的建立,我们的体会是:(一)寄养田首先应选择播种早,长势好,蚜虫多的麦田、油菜田或棉麦、棉油间作地,面积至少不得小于5亩。(二)每亩寄养田放入春捕 Foster fields in recent years in our province cotton area in the use of ladybugs aphid aspects of the new development. It is one of the ways to expand the source of scoop in a planned way and fight for the initiative of treating aphids. It has the advantages of simple method, labor-saving and capital saving. The establishment of the foster field, our experience is: (A) the fist field should first be sown early, good growth, aphids and more wheat, rapeseed or cotton, cottonseed Intercropping, the area shall not be less than 5 acres. (B) into the spring catch per mu field