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东台市沿海旱粮地区,夏大豆以春玉米间套种为主,只部份麦(油)后单种。田间以马唐、狗尾草、蟋蟀草、旱稗、千金子等禾本科杂草为主。苗期需人工除草2次,每亩需5个工。此的正值梅雨季节高温多雨,杂草暴发为害,人工除草效果差,一般产量损失2至3成。1985—1987年对夏大豆的化学除草进行了试验与示范,3年已示范2.13万亩,每亩可省工4.5个,增产大豆30—50公斤。有关技术如下:
Dongtai coastal ravines, summer soybean intercropping mainly spring maize, only part of the wheat (oil) after a single species. Field to Cotinus, Setaria, cricket grass, dry barnyard grass, gold and other grasses mainly. Seedling need to weeding 2 times, 5 workers per acre. The positive rainy season, high temperature and rainy season, weed outbreak damage, artificial weeding is poor, the general output loss of 2 to 3 percent. In 1985-1987, the chemical weed control of summer soybean was tested and demonstrated. In the past three years, it has demonstrated 2.13 million mu, saving 4.5 laborers per acre and increasing 30-50 kilograms of soybean. The technology is as follows: