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一、从人工除草向化学除草过渡 目前我省稻田除草仍以人工为主,一般亩用工1.5—6个,眼子菜300株/m~2以上时,10个工亦难除尽。我们在拔除稗草,有矮慈菇197株/m~2的稻田, 进行不同除草方法的工效比较试验,人工除1亩需10.7小时;除草剂喷雾需1.4小时,提高工效6.7倍;撤除草剂毒土需42.6分,提高工效14倍;撒除草剂颗粒剂只需6.8分,提高工效93.1倍;使用药肥复合除草剂,作为水稻返青施肥,省去除草工。 二、几种有效的化除措施 1.秧田 稗草是秧田的主要杂草,一般采用播前土壤处理或苗期处理。做好秧板后,每亩用杀草丹300ml(商品量,下同),加水35kg喷雾,或加湿润细土15kg均匀撒施土表。施药时灌浅水层,施药后保水3天,排水播
First, the weeding from artificial weeding to chemical transition At present, our province is still mainly artificial artificial weeding, the general mu labor 1.5-6, 300 subtropical plants / m ~ 2 above, 10 workers are also difficult to eliminate. We have unpicked barnyard grass, there are 197 strains / m ~ 2 paddy field, different methods of weeding comparison of ergonomics, artificial removal of 1 acre required 10.7 hours; herbicides need 1.4 hours to spray, increase efficiency of 6.7 times; 42.6 points for toxic soil to improve work efficiency 14 times; herbicide granules just 6.8 points to improve the efficiency of 93.1 times; the use of compound fertilizer herbicide as greening rice fertilization, eliminating the weeding workers. Second, several effective measures to eliminate 1. Seedling barnyard grass seedling is the main weed, generally used before sowing soil treatment or seedling treatment. After planting seedlings, herbicide Dan 300ml per mu (commercial volume, the same below), add water 35kg spray, or humidified fine soil 15kg uniform soil table. Irrigation shallow irrigation layer, after application of water 3 days, drainage broadcast