一九六四年,我们分别以敌稗、2.4—D、2.4.5—T在稻田和玉米田上进行除草试验,结果如下: 一、稻田“敌稗”除草 六月上旬,以国产20％敌稗乳油(每亩用药量0.65公斤)50倍稀释液喷洒于水直播稻田中。此时稗草正值2—3叶,稻苗为2片叶。喷药前落干水层,使药液充分接触草体,喷药后第二天灌深水淹没草心。连续两次喷药的,于 In 1964 we carried out weeding tests on paddy fields and corn fields with propanil, 2.4-D and 2.4.5-T, respectively. The results were as follows: I. Weeding of “propanil” in paddy fields In early June, Barnyard EC (0.65 kg per acre dose) 50-fold dilution of water sprayed in the rice field. At this time barnyard grass is 2-3 leaves, rice seedlings for 2 leaves. Falling dry before spraying the water layer, so that liquid full exposure to the grass body, the next day after the injection of deep irrigation water grass Cordyceps. Spraying twice in a row, at