摘要
通过对５个固定苗圃、２个临时苗圃留床苗木的调查，及圃地土壤养分和苗木养分分析，结果表明：经营６ａ的苗圃，其土壤有机质和矿质养分比相邻撩荒地低２～３倍；苗圃地的立地条件与苗木生长优劣关系密切，砚木、金丝李宜于低海拔石灰性土圃地培育，柚木、火力楠、石梓宜在低海拔偏中性土苗圃培育，合果木、母生、八角、米老排、红椎、马尾松等苗木宜培育在高海拔酸性土苗圃上。圃地施肥结果显示，阔叶树种施用Ｎ２４Ｐ０Ｋ２０组合肥为优，与对照比，树高、地径、地上和地下部生物量，观光木分别增加５６．８％、３８．７％、１０７．４％、１０８．６％；格木亦分别增加了７．２％、１０．３％、１２．３％、１２．１％。针叶树种施用Ｎ２４Ｐ３０Ｋ０组合肥为佳，与对照比，地上和地下部生物量，湿地松分别增加了７７．８％和９３．６％，马尾松分别增加１１．５％和２７．７％。
Through investigations on the seedling growth in five permanent and two temporary nurseries,an analysis was made on the soil nutrition condition. The results indicate that the condition of the soil nutrient in the nurseries which had been cultivated with seedlings in 6 successive years were 2～3 times lower than that in the soil of the wasteland nearby. The seedlings of Burretiodendron hsienmu and Garcinia paucinervis grow well in the nurseries at lower altitude with lime soil. The seedlings of Tectona grandis, Michelia macclurei and Gmelina arborea are suitable to be cultivated in the nurseries at lower altitude with neutral soil. Paramichelia baillonii,Homalium hainanense, Illicium verum,Mytilaria laosensis, Castanopsis hystrix and Pinus massoniana grow well at the higher altitude nurseries with acid soil. The results after fertilization for seedlings show,that the fertilizer rate of N 24 P 0K 20 is the best combination for the seedlings of broad leaf trees. The height,root diameter,above ground and underground biomass of the seedlings of Tsoongiodendron odorum after fertilization with N 24 P 0K 20 were raised by 56.8%,38.7%,107.4% and 108.6% respectively,and those of Erythrophleum fordii were increased by 7.2%,10.3%,12.3% and 12.1% respectively. For conifers,the fertilizer rate of N 24 P 30 K 0 is the best one. The above ground and under ground biomass of the seedlings of Pinus elliotii were increased by 78.8% and 93.6% mor than those of the check, and for Pinus massoniana increased by 11.5% and 27.7% respectively.
出处
《林业科学研究》
CSCD
北大核心
1996年第4期403-408,共6页
Forest Research
关键词
苗圃地养分
育苗
施肥
土壤管理
soil nutrition condition in nursery, seedling culture, fertilization
