采用样地编年序列法，并利用生长方程计算不同林龄云南松的个体生物量、种群生物量、地上生物量和地下生物量的变化规律。
The methods of plots arranged with age and growth equation were used to calculate the individual, population, aboveground and underground biomass of Pinus yunnanensis.
结论胰酶消化植块培养法是一种能够获得高成活率、高收获量、细胞形态和生长状况良好的体细胞培养方法。
Conclusions method of trypsinization is good method which acquire high percent of live cells and more production of cells.
试验采用间歇式密闭室通气法，测定了冬小麦生长季氨挥发的损失量。
This paper aims to study the ammonia volatilization use continuous air flow enclosure method in wheat season.
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