3个沙地造林树种的施肥试验效果

在达拉特旗东南部沙漠进行的沙柳、沙棘和锦鸡儿生态造林中,通过施用不同肥料试验,研究了不同肥料对3种耐沙树种的造林效果。结果表明,与对照相比,施用农家肥、复合肥、尿素氮肥对3个树种高生长量作用显著：在沙柳造林中,施农家肥比对照提高树高生长量为142.39%,冠幅生长量提高116.36%;施复合肥比对照提高树高生长量88.85%,冠幅提高108.18%;施尿素比对照提高树高生长量为66.85%,冠幅提高73.94%。施肥对沙棘和锦鸡儿的效果也与沙柳相似,均比对照有较显著的提高。农家肥能明显提高沙柳和沙棘造林成活率,农家肥和复合肥能明显提高锦鸡儿造林成活率。施用农家肥是沙地造林较为理想的技术措施。

Fertilization Effects of Three Varieties of Afforestation Species in Sandland

In the ecological afforestation of Salix psammophila ,Hippophae rhamnoides Caragana arborescens in southeastern Dalateqi Desert ,through applying different fertilizer experiments ,afforestation effects of different fertil-izers on three varieties sand resistant tree species were studied .Result shows that compared with the control ,apply-ing manure ,compound fertilizer ,ammonia urea fertilizer on height growth of three species have significant effects ：in Salix psammophila afforestation ,height growth crown can increase by 142 .39% 116 .36% ,respectively than that of CK by applying manure ;height growth crown can increase by 88 .85% 108 .18% ,respectively than that of CK by applying compound fertilizer ;height growth crown can increase by 66 .85% 73.94% ,respectively than that of CK by applying urea .Fertilization have similar results on Hippophae rhamnoides Caragana arbores-cens with Salix psammophila ,they all have more significant improvements than CK .Manure can significantly im-prove the survival rate of afforestation for Salix psammophila Hippophae rhamnoides ;manure compound fertilizer can significantly improve the survival rate of afforestation for Caragana arborescens .Manure application is an ideal technical measure for afforestation in sandland .