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杉木是我国南方主要速生用材树种之一.为了了解杉木幼树的生长情况与生理特性的关系,特别是与光合作用的关系,我们在杉木幼林中进行了某些生理特性的测定. 一、试验材料及方法试验地为贵阳市孟关公社石龙大队林场杉木林.造林地分别采用带状、全面及撩壕三种不同整地方法.在带状整地杉木幼林中,秋季分别测定1年生杉木生长健壮的幼树及生长衰弱的幼树的净光合速率及呼吸速率,重复三次.翌年春季,调查了不同整地
Cunninghamia lanceolata is one of the main species of fast-growing timber in southern China.In order to know the relationship between the growth and physiological characteristics of young cedar, especially the relationship with photosynthesis, we carried out the determination of some physiological characteristics in young cedar Materials and Methods The experiment was conducted in Guiyang Meng Guan commune Shilong Brigade forest Cunninghamia lanceolata forest afforestation were used three different land preparation methods, strip and trenches in young flat alpine fir young forest were measured in autumn fir growth The net photosynthetic rate and respiration rate of robust saplings and infested young saplings were repeated three times. In the following spring, different sites were surveyed