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在干旱地区育苗造林,造成出苗率和成活率低的主要原因是,由于苗木或种子在栽植(播种)过程中失水过多或土壤水分不足而死亡。我们从1984年起,在干旱地区的同心县羊路乡,用区计量所试制的高吸水性树脂进行育苗造林试验,取得较好的效果。用0.5％、1％、2％浓度的吸水剂分别对刺槐种子和一年生白榆苗进行浸种和浸根五分钟,然后在糜子歇茬的缓坡地上进行试验,对当年播种的刺槐种子于6月9日测定,使用0.5％和2％吸水剂浸种的比清水处理的幼苗早出土2～8天,平
The main reason for the low rate of emergence and survival in nursery and afforestation in arid regions is the death due to excessive loss of water or insufficient soil moisture during the planting (sowing) of seedlings or seeds. Since 1984, we have conducted experiments on nursery and plantation in Yangluo Township, Tongxin County, arid area, using super absorbent polymers developed by the District Metrology Institute to achieve better results. The Robinia pseudoacacia seeds and annual white elm seedlings were soaked and soaked for five minutes with 0.5%, 1%, and 2% water absorbent respectively, and then tested on the gentle slope of stubble of Millet. On the 9th, seedlings treated with 0.5% and 2% water-absorbing agents soaked with water were earthed for 2 ~ 8 days