摘要
本文采用随机抽取样本,对福建省建阳地区各县(市)进行土壤调查,并进行线性回归和方差分析。土壤有机质直接影响到土壤氮素供应水平和保肥供肥性能,并对磷、钾素的活性程度和速效养分供应具有显著影响。
Nitrogen, phosphorus and potassium are the three major elements of soil nutrition, masts to the growth of plants. The cation exchange capacity of soil mirrors the ability of the soil to preserve nutrients and shows the buffering power. It is an important reference for fertilization and improvement of soil. It is well known that with the function of activeting phosphorus, organic matter in soil is the main resource from which woods get their mitrilion and can enhance the capacity of keeping soil rich and its buffering as well. However, few studies on this ground related forest soils have been done yet. The materials used in this article are taken from the soil investigations by the counties and municipality of forests of Jienyang District, Fujian Province. Out of which specimens are taken to make out linear regression and rightness and difference analysis to show that organic matter in soil has direct effects on the supply of nitrogen and the capacities of retaining and supplying nutrients of soil. That organic substances play an important role in deciding the activity and supplying intensity of phosphorus and potassium.
出处
《福建林学院学报》
CSCD
1989年第2期140-144,共5页
Journal of Fujian College of Forestry
关键词
森林
土壤
有机质
供肥性能
forest soils, organic matter, nutrient availabitily regression analysis, difference analysis
