杂草是苗木的劲敌,它与苗木争夺水分、养分和光照。因此,除草是保证苗木正常生长的必要措施。苗圃针叶树育苗除草,用工量大,往往因劳动力不足,除草不及时,致使苗木上杂草丛生,严重的影响了苗床产量与质量。而采用化学药剂除草用工量少,成本低,杀草率高,有利于苗木生长,保苗增产效果好。目前我国生产的除草剂中,适合苗圃施用的有十多种,经试验与生产上应用,以40％除草醚消灭杂草效果最好。现就应用情况总结如下。一、除草醚的用量和用法 Weeds are the rival seedlings, it competed with seedlings of water, nutrients and light. Therefore, weeding is necessary to ensure the normal growth of seedlings. Nursery conifers nursery weeding, large amount of labor, often due to lack of labor, weeding is not timely, resulting in overgrown seedlings, seriously affecting the yield and quality of seedbed. The use of chemical pesticides weeding less, low cost, high rate of kill grass, is conducive to the growth of seedlings, seedling yield increase effect. At present, China’s production of herbicides, suitable for nursery application of more than 10 species, the application of test and production, with 40% weed elimination ether weed best. Application is summarized below. First, the dosage and usage of weeding ether