干旱区碧玉杨地膜覆盖扦插育苗生长观测及苗期管理研究

Growth Observation and Seedling Management of Populus sp. Poplar Covered with Plastic Film in Arid Region

山丹县碧玉杨地膜覆盖扦插育苗生长观测结果表明,碧玉杨在山丹县长势良好,苗高速生期为6月下旬到8月下旬,期间苗高生长量占总生长量的63.44%,生长高峰期为7月下旬;地径速生期为7月上旬到8月下旬,期间地径生长量占总生长量的48.2%,生长高峰期为8月上旬。在幼苗期、速生期、硬化期、休眠期4个生长阶段,采用科学管理技术可提高碧玉杨的成活率和生长量。

The results of observation on seedling growth of Populus sp. mulch in Shandan County showthat the Populus sp. yang grows well in Shandan County. The high growth period of the seedling is from lateJune to late august. The seedling height accounted for 63.44% of the total growth. The peak period is in lateJuly; the fast-growing period of ground diameter is from early July to late august, and the ground diametergrowth accounts for 48.2% of the total growth. The peak of growth is in early august. In the four growthstages of seedling, fast-growing, hardening and dormant stages, scientific management techniques were usedto increase the survival rate and growth of Populus sp..