论文部分内容阅读
自七十年代以来,容器育苗在我国日益受到重视。其营养基质的配方,大多数是就地取材,用表层腐殖质土和园田土,因而杂草易滋生,给苗期管理带来很大困难。为了寻找一种高效、省工的除草方法,我们在容器育苗中开展了化学除草试验。一、试验材料与方法(一)试验材料供试树种为侧柏、油松、华山松。供试化学除草剂为50%可湿性扑草净粉剂和50%可湿性西玛津粉剂。(二)试验方法采取随机区组设计,用不同浓度的扑草净和西玛津,分别于1983年秋和1984年春,按四
Container seeding has been paid more and more attention in our country since the seventies. The nutrient matrix formulations, most of them are drawn on the ground, with the surface humus soil and garden soil, so weeds easy to breed, to seedling management has brought great difficulties. In an effort to find an efficient and labor-saving weeding method, we conducted a chemical weeding test in container seedling. First, the test materials and methods (A) test materials for the test species Arborvitae, pine, Huashan song. The test chemical herbicides were 50% wettable powder and 50% wettable powder. (B) test method Randomized block design, with different concentrations of prometryn and Sima Jin, respectively, in the autumn of 1983 and the spring of 1984, according to four