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草是林业育苗的大敌。它抢夺苗木的水分、养料;也是相当一部分病害的中间寄主,为一部分害虫栖息、繁殖的场所,可以认为是苗木病虫害的发源地之一。在苗木抚育管理中,仅锄草一项所用劳力占80％左右。故解决灭草问题,是育苗中的关键措施。1976年,我们在北京杨育苗地施用化学灭草剂,取得了一定成绩。现报道于后:5月28—6月1日,十亩北京杨当年插条育苗地,苗高一尺左右。用喷雾器喷洒五种化学灭草剂作对比试验。6月28日调查,结果如下:除草醚(粉剂),每亩用量1.5市斤,杀草率96％;扑草净(粉剂),每亩用量0.5市斤,杀草率99％;敌草隆(粉剂),每亩用量0.5市
Grass is the enemy of forestry nursery. It snatch seedlings of water, nourishment; is also a middle host of a considerable part of the disease, as part of the habitat of pests, breeding places, can be considered as one of the birthplace of nursery stock pests and diseases. In nursery stock management, only one of the weeding used labor accounts for about 80%. Therefore, the solution to the problem of weed control is the key measure in nursery. In 1976, we used chemical herbicide in Yangyue Miao, Beijing and achieved some success. Are reported after: May 28 - June 1, 10 acres of Beijing Yang seedling nursery that year, about one foot high. Spraying spray with five chemical herbicides for comparison test. June 28 survey, the results are as follows: Weeding ether (powder), the amount of 1.5 kg per mu, the killing rate of 96%; prometryn (powder), 0.5 kg per acre, killing 99% Powder), the amount of 0.5 acres per mu