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杨树是我区城乡园林绿化的重要树种,但是苗圃除草费工,易伤苗,严重时造成成片缺苗,杂草的防除成为育苗的关键。为此,我们于一九九三年进行了杨树苗田化学除草试验。一、材料与方法 1、供试田块供试田块在吐鲁番市林业站苗圃,土壤墒情好,肥力中等,供试苗木为5—10片叶龄。 2、除草剂品种除草剂品种为:草甘磷乳油,40%阿特拉津和80%氟乐灵。 3、处理:三种药剂各选择三种容积百分比浓度。草甘磷选0.7%、1.1%、1.5%(相当于每亩
Poplar is an important species of urban and rural landscaping in our district, but nursery weeding workers, easy to hurt the seedlings, resulting in serious shortage of seedlings, weeds control become the key to nursery. To this end, we carried out a poplar seedling chemical weeding test in 1993. I. Materials and methods 1, for trial plots plots plots in Turpan City Forestry Station nursery, soil moisture is good, medium fertility, the test seedlings 5-10 leaf age. 2, herbicide varieties Herbicide varieties: glyphosate 40% atrazine and 80% trifluralin. 3, treatment: three kinds of agents choose three kinds of volume percentage concentration. Glyphosate selected 0.7%, 1.1%, 1.5% (equivalent to per acre