1.处理荻草消灭高粱蚜老窝:高粱蚜产卵在荻草上过冬,荻草是高粱蚜的老窝,因此处理荻草是消灭高粱蚜在为害以前的最好办法,处理荻草的时间最好是在秋季9月下旬产卵以前,春季4月中旬孵化以前进行也有较好效果。无论秋季或春季处理,均可结合消除其他杂草区粪燻肥进行,地里或地边的荻草要求连根挖出,其他地方的荻草可点地皮割下,若劳力 1. Treatment of Dioscorea eradication of sorghum aphids old nest: sorghum aphid spawning grass on the gizzard winter, gizzard is the sorghum aphid old nest, so the treatment of gizzard is to eliminate sorghum aphid the best way before the damage, the treatment of gizzard the most time It is good before the fall of September spawn, before the spring hatch in mid-April also had better results. Both autumn and spring treatments can be combined with the elimination of manure and fertilizers in other weed areas. The grass or grass on the ground or on the ground is dug in roots and the grass in other places can be cut off in a spot. If labor force