Soil humus 第1页

Influence of the Spatial Structure of tress,etc. on the Young Trees of Pinus koraiensis under Natural Secondary Forest STUDY ON SOIL HUMUS AND FERTILITY CHARACTERISTIC IN THE 29 YEAR-OLD PLANTATIONS OF CHINESE FIR ON DIFFERENT ROTATIONS Effects of organic material application on the structures of humic acids in low yield paddy soil Effect of planting Slenderstalk altingia under the canopy of sprout of Chinese fir on the soil humus and soil structure