Taking Populus cathayana trees,including Populus euramericana'N3016'X Populus ussuriensis,Pop-ulus pseudo-cathay ana × P.deltoides,Populus simonii × Populus nigra,as materials,the artificial plastic green-house was built,and the water stress test of root control container seedlings was carried out to study the water de-mand and drought resistance of P.cathayana seedlings,so as to explore and solve the key technology of high quality and efficient cultivation of seedlings in P.cathayana production.The results showed that the soil moisture content of Populus simonii × Populus nigra,Populus pseudo-cathay ana X P.deltoids,Populus euramericana'N3016'X Populus ussuriensis at seedling stage decreased to 10.82％,which was a serious drought and would cause water stress of seedlings.Before that,timely irrigation was needed.When the soil moisture content was below 6.69％,the Populus cathayana varieties had reached the wilting coefficient.The research results could provide a scientific basis for the efficient cultivation of Populus cathayana tree industrial resource materials.
关键词
青杨类杨树/控根容器/水分胁迫/抗旱能力/苗木培育
Key words
Populus cathayana tree/root control container/water stress/drought resistance/seedling cultivation
维普
万方数据