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“禾大壮”又叫草达灭,商品名 Ordram,是选择性除草剂,在稻田能有效的防除稗草和牛毛草,而对稻苗十分安全。禾大壮是具有挥发性,并有强烈的刺激臭味的黄褐色油状液体,不易溶解于水,但是水中扩散性比较强,毒性低、对人畜、鱼类很安全。1981年我省进口的禾大壮为美国产96%乳油。为了鉴定禾大壮的除草效果和施用技术,我们在哈尔滨市太平区民主公社水稻育秧田,插秧本田和直播田进行了小区试验和大面积示范,其结果简报如下。
“Wo Dazhuang” also known as herb Daochu, Ordram trade name, is a selective herbicide in the paddy field can effectively control barnyardgrass and Mao Mao grass, and rice seedlings are very safe. Wo Dazhuang is volatile, and has a strong odor-oily yellow brown oily liquid, not easy to dissolve in water, but the water diffusibility is relatively strong, low toxicity, human and animal, fish is safe. In 1981, our province imported Wo Dazhuang 96% EC for the United States. In order to identify the weeding herb and its application technology, we conducted community trials and large-scale demonstration of rice seedling, transplanting Honda and direct seeding in Harbin Democracy Commune of Harbin. The results are as follows.