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我场地处湖区,以稻麦(或油菜)两熟为主。稻田杂草约有32种,其中能造成草荒的有12种,如稗草、长瓣慈姑草、牛毛毡、异型莎草、日照瓢拂草、金鱼藻、双穗雀稗、眼子菜、四叶萍、水绵、荷叶、野荸荠草等。近年来,我场试验化学除草获得成功,1978年化学除草面积占稻田面积的87.5%。水稻经化学除草后,产量提高,每亩除草作业成本因省工而节省3.32元,劳动强度也大为减轻。一、除草剂使用技术(一)秧田1.播种前施药。在播种前3—4天,整平合式秧田,田面保持1寸深的水层,每亩单用25%除草醚
My field is located in the lake area, mainly with rice and wheat (or rape) two ripening. There are about 32 kinds of weeds in paddy field, of which 12 species can cause grass shortage, such as barnyard grass, long lobelia grass, bovine blankets, Shaped sedge, sunbathed brushweed, algae alsophila, paspalum, Four Ye Ping, sponge, lotus leaf, wild chestnut grass and so on. In recent years, my field test chemical weeding success, chemical weedy area in 1978 accounted for 87.5% of the area of paddy fields. After the chemical weeding of rice, the output is increased, the labor cost per mu for weeding is saved by 3.32 yuan due to labor saving, and the labor intensity is also greatly reduced. First, the use of herbicides technology (A) seedling 1. Sowing before spraying. 3-4 days before sowing, the whole flat seedling field, field to maintain 1-inch deep water layer, with only 25% of the weed ether per acre