【摘要】 营造杨树人工林多是采用大株行距,抚育时需要较高的人工或机械费用。为了提高综合经营水平,在行间种植农作物可以实现多条渠道经济收益。在株、行间进行化学灭草又可以使农作物免耕,林地也不需要单独进行锄草。在杨树人工林行间种大豆施氟乐灵(Trefluralin. Treflan)进行灭草,1982年在本所试验地中测得的施药量3kg/ha(商品量)灭单子叶杂草效果99.4％,双子叶98.4％、总防效83％。特别是灭稗草(E.Crusgalli)效果可达99％—99.6％。根据农业科研单位提供资料施用氟乐灵在大豆田间灭草可使数量提高15％—20％。由于杂草减少,与树木争水争肥的现象也减少。根据1982年在杨树人工林试验地测得平均高生长量与对照区相比增加4％,平均胸径生长量与对照区相比增加8％。杨树人工林施用氟乐灵灭草是林农一举双得的好措施。更多还原

【Abstract】 In planting poplars, big plant and space are usually needed. So it needs to pay high cost for manual and mechanical work, In order to enhance level of overall management, agricultural crops could be intercropped on the plantation, from which economic effect can be obtained. Chemical weeding can not only culture crops without ploughing, but it needn’t weed particularly for the plantation.The writers got some results by intercropping soybean and using Trefluralin. Treflan in 1982. When medicinal volume used was 3kg/ha, the weeding effect on monoeotydons was 99.4% on dicotyledons was 98.4% and the total effect was 87%. Specially, weeding effect on E. Crusgalli was 99.6%. The information from agriculture research organization showed that the production of soybean field used Trefluralin was increased by 15%—20% and competing water and fertilization with trees was reduced.Based on the data, the writer found that tree height increased by40% and tree diameter growth increased by 8% compared with the comparisons. So, the use of chemical weeding by Trefuralin is good for both forest and agriculture,更多还原