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1980—1983年,胶东几个县市的春玉米,苗期均受到害虫的严重危害,影响了苗全、苗壮。1981年文登县部分春玉米苗期因蛴螬、金针虫等地下害虫危害造成缺苗12.1—15%;因蓟马、麦秆蝇危害造成玉米苗枯心、卷心率达5.9—11%,1983年达7.5—52%。尚有部分春玉米不得不毁种它作。自1982年起,我们选用呋喃丹、氧化乐果等进行根区施药防治地下、地上苗期害虫试验,发现3%呋喃丹微粒剂,不仅可以有效地防治玉米苗期地下害虫,对玉米苗期地上害虫也有较好的防治作用。
From 1980 to 1983, the spring maize and seedling stage in several counties and cities of Jiaodong were severely endangered by pests, affecting seedlings and seedlings. In 1981, part of spring corn seedlings in Wendeng County caused 12.1-15% of the missing seedlings due to the damage of underground pests, such as coccinea, pinworm and so on. Because of the damage caused by thrips and wheat flies, the corn seedling had a heart rate of 5.9-111%. Up to 7.5-52%. There are still some spring corn have to destroy it for. Since 1982, we use carbofuran, omethoate and other root zone pesticides to control the underground and aboveground pest pest experiments and found that 3% carbofuran granules, not only can effectively control corn seedling underground pests, corn seedlings On the ground pests also have a better control effect.