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桉树生长迅速,栽植后三年左右即可郁闭成林。近年来我省桉树发展很快,许多坝区和低山丘陵都在大量种植。但是,一些地方在桉树造林过程中,成活率不够理想,主要存在着以下问题。一、栽植坑小,盖土少、没有踩实,有的塑料袋还裸露在外,因而,成活率低。二、营养袋内没有配制培养土,而是就地取的生土,因而苗木生长不良。装袋的土,应该是配制的保水能力好、含腐质土多,有一定量的有机肥、化学肥料的营养土,这样才能育出优质壮苗。
Eucalyptus grow rapidly, about three years after planting can be closed forest. In recent years, the rapid development of eucalyptus in our province, many dam areas and low hills are planted in large quantities. However, some places in the process of eucalyptus afforestation, the survival rate is not ideal, the main problems are as follows. First, small planting pit, cover less soil, no trample, and some plastic bags are also exposed, therefore, the survival rate is low. Second, the nutritional bag is not prepared culture soil, but the local take the soil, so poor growth of seedlings. Bagging of soil should be prepared with good water retention capacity, with humus soil, a certain amount of organic fertilizer, chemical fertilizers nutrition soil, so as to nurture high quality seedlings.