山核桃不同类型无性系苗木造林对比试验

采用不同类型山核桃无性系苗木进行造林,通过7 a的试验表明,不同类型无性系苗与造林当年成活率、保存率、树高生长、地径生长、挂果年限及果品质量等关系密切,化香砧生长枝、本砧生长枝嫁接苗造林具有成活率高,保存率好,树高、地径生长快,挂果投产时间早,山核桃果品质量好等特点;本砧结果枝嫁接苗造林与化香砧生长枝嫁接苗相比具有一定的矮化特性及提前结果特性,但造林成活率低,保存率差,果品质量也远不及其他类型苗木.

Comparison Test on Afforestation with Different Clonal Seedlings of Carya cathayensis

Seven years test on afforestation with different clonal seedlings of Carya cathayensis indicated that different clonal seedlings planted had close relation with current year survival rate of forestation, conservation rate, tree height and ground diameter growth, age of fruit bearing and fruit quality. The test showed that it had characters like higher survival and conservation rate, faster height and ground diameter growth, earlier fruit bearing age, higher quality of hickory of stand with grafted seedlings of Platycarya strobilacea and C. cathayensis as stock, growing branch as scion, while stand with the grafted seedlings of C. cathayensis as stock and bearing branch as scion, and with ones of P. strobilacea as stock and C. cathayensis growing branch as scion had characters of dwarf and earlier fruit bearing age, but lower survival and conservation rate, and lower quality of nut.