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为观察杀草丹、禾大壮在薄膜或湿润育秧条件下,对水稻幼苗生长的影响,以确定薄膜育秧或湿润育秧田的杂草能否在播后即用杀草丹或禾大壮防除。一、试验方法药剂为日本产50％杀草丹及美国产96％禾大壮乳油。用药量:杀草丹每亩为100、150、250克;禾大壮每亩为100、125克。施药方法为塌谷后喷雾或毒土,喷雾每亩药量加水30公斤,毒土每亩药量加土20公斤。薄膜育秧供试水稻品种为汕优2号。薄膜覆盖宽度为30厘米。小区面积2平方米,随机排列,三次重复。1985年5月1日播种施药,正常管理。5月3日各
In order to observe the influence of herbicide Dan and Wo Dazhuang on the growth of rice seedlings in the condition of thin film or wet seedling to determine whether the weeds in the film seedling or the wet seedling could be controlled by the herbicide Dan and Wo Dazhuang . First, the test method Pharmacy 50% of Japan to kill grass Dan and the United States produced 96% Wo strong Zhuang EC. Dosage: kill grass Dan per acre 100,150,250 grams; Wo large Zhuang per acre 100,125 grams. Spray pesticides after the fall or poisonous soil spray, spray dose of water per acre 30 kg of water, poison soil poisoning plus 20 kg of soil. Thin film seedling varieties for testing Shanyou 2. Film coverage width of 30 cm. Residential area of 2 square meters, arranged randomly, repeated three times. May 1, 1985 sowing pesticides, the normal management. May 3 each