叶面喷施调节膦一次能在三年内显著地抑制灌木杂草的滋生,同时,目的树种——油松的生长得到了促进。在适宜剂量下,其高生长量增加25％,地径增加20％左右。就本林区所代表的植被类型而言,调节膦的用量以2.4公斤/公顷较为适宜。不论在五月底还是七月中旬喷药,均有明显效果。此外,用调节膦化控代替人工抚育,还能大幅度节约劳力,减少抚育费用。同时,该项措施能有效地保护植被,防止水土流失;该药品没有毒性,不污染环境。因此,作为一项新的幼林抚育技术,将在林业生产中具有宽广的前途。 Phosphorous application by foliar application significantly inhibited shrub weeds breeding within three years at a time, and the growth of Pinus tabulaeformis, a species of interest, was promoted. At the appropriate dose, its high growth increased by 25%, diameter increased by about 20%. In terms of the types of vegetation represented by this forest area, the amount of phosphine to be used is preferably 2.4 kg / ha. Whether in the end of May or mid-July spraying, have a significant effect. In addition, the use of phosphine chemical control instead of manual tending, but also significantly reduce labor and reduce tending costs. At the same time, this measure can effectively protect the vegetation and prevent soil erosion; the medicine is not toxic and does not pollute the environment. Therefore, as a new young forest tending technology, it will have a broad future in forestry production.