摘要
本文对苗圃施肥的研究历史、现状、发展趋势及存在的问题作了详细评述.认为应根据综合环境因子来研究营养诊断,桉树种、土壤判定合理的施肥方案.
The author dwells on the history, status and problems of fertilizer applica-tion in 6 aspects: effect of nutritional diagnosis technique on the growth of seedlings,effect of NPK on the growth of seedlings, effect of NPK in different ratio on thegrowth of seedlings, the relationship between different fertilizers and the growth ofseedlings, rational application rate and the application date of NPK. Thc author aversthat fertilizer application in nursery beds should be researched in the following 6aspects: researches on the regularity of annual growth of seedlings and the nutrient re-quirements (absorption dynamics) at different growth stages which are important inguiding the fertilizer application and in promoting the effect of fertilizer application; re-searches on the impending problem in finding out a labor-saving method of fertilizer ap-plication that is effective in promoting the nutrient utilization and the effect of fertilizerapplication; emphasis on applying organic fertilizer in nursery management to avoidsoil compaction and deterioration of physical and chemical properties of soil over manyyears of chemical fertilizer application; keeping technical files of nursery in accordancewith soil condition, tree species and sort of seedlings; using computer to monitor andpredict the status of nutrients in seedlings and soil in guiding fertilizer application; re-lating the research on fertilizer application to that on the survival rate of seedlings inplanting and the growth of young stands; emphasis on reseraches of the symptoms dueto deficit of microelements and lack of an effective remedy.
出处
《世界林业研究》
CSCD
北大核心
1992年第3期22-29,共8页
World Forestry Research
