锦县建业乡位子村农民窦永智,利用稻田进行了育鱼种试验,获得了鱼种、水稻双丰收。1985年7月中旬,他投入规格3.3—4厘米的夏花鱼种6,000尾(草、鲤各半),到九、十月仅60天时问,收铺平均规格10厘米的鱼种4,253尾,成活率70.8％,纯收入377元。他稻田育鱼种的方法是:1.在稻田池内挖一个宽50厘米,深35厘米的鱼沟,在交叉处修长、宽、深各1米的鱼坑,在晒田、施肥、打药前把鱼从田内赶入鱼坑,为减少鱼坑占地,利用边行通风优势,加行密植,不减少水稻株数。2.在注、排水口处安装上铁 Dou Yongzhi, a farmer from Sejian Village, Jianye Township of Jinxian County, conducted a test of fish breeding using paddy fields and obtained double harvests of fingerlings and rice. In mid-July 1985, he put 6,000 species of summer flowers (grass and common carp) with a size of 3.3-4 cm and asked only 60 days in September and October to collect 4,253 species of fish 10 cm in size. Survival rate of 70.8%, net income of 377 yuan. His method of breeding fish in paddy fields is: 1. dig a fish pond 50 cm wide and 35 cm deep in the rice field pond, slender, wide and deep 1 m fish pits at the crossings, The fish into the fish pit from the field, in order to reduce the footprint of the fish pit, the use of edge ventilation advantages, plus close planting, do not reduce the number of rice. 2. In the note, drain installed at the iron