论文部分内容阅读
选择不同种源的白刺在黄河三角洲重盐碱地条件下进行耐盐能力及其栽培技术的试验观测。结果表明 :白刺耐盐能力强 ,尤以大义路种源表现最好 ,在土壤含盐量达 2 .5 %时 ,造林成活率仍达 90 %以上 ,并具有明显的抑盐改土作用。提高盐碱地白刺造林成活率、促进生长的关键技术措施是选择土壤含盐量 0 .6 %以上的造林地、两耕两耙法整地、以 111~ 16 7株/ 6 6 7m2 的密度造林、雨季容器苗栽植及控制杂草生长等
Experiments on salt tolerance and cultivation techniques of Nitraria tangutica in different provenances were conducted under heavy saline soil conditions in the Yellow River Delta. The results showed that Nitraria tangutorum has the ability of salt-tolerance, especially the Shangyiyuang provenances. When the salinity of soil reaches 2.5%, the survival rate of afforestation is still over 90% . The key technologies and measures to improve the survival rate and promote the growth of Nitraria przewalskii are as follows: the afforestation land with the soil salt content above 0.6%, soil preparation with two tillers and two rakes, afforestation with the density of 111-16 7/667 m2, Rainy season container seedling planting and control of weed growth