basin soil
2.A STUDY ON THE ECOLOGICAL CONDITIONS OF THE SEEDLINGS OF SEVERAL TREE SPECIES ON THE PURPLISH SOILS OF THE SICHUAN RED BASIN III.RELATION OF SOIL PHYSICAL-CHEMICAL PROPERTIES TO SEEDLING GROWTH OF THE ALDER
7.Under controlling phosphorus (P) level, the chlorophyll (Chl), carotinioid (Caro) and photochlorophyll (Pchl) contents of wheat leaves at seedling and jointing stages were measured respectively in simulating drought stress solution culture (-0.5 MPa and -1.0 MPa) , controlled irrigated water soil basin culture ( at 75%, 55% & 35% of soil capillary water) and field test (irrigated and natural drought) .
8.SOIL TYPES AND THEIR DISTRIBUTION CHARACTERISTICS IN GONGHE BASIN OF QINGHAI PROVINCE
9.This thesis researches the formation and evolution of land environments and village forms with nature geography background in northwest region of Yunnan provence (main about Lijiang basin and Heqing basin), Trying to explain every element (such as: topography, landscape, soil, water, vegetation, etc.)
10.After analyzing purple soil sampled from Neijiang,Leshan ofSichuan Provinec and Yuanmou of Yunnan Province,the contrast results of microbe quantity feature between surface and subsurface purple soil were obtained as follows.The content of soil organic matter,total and available nitrogen,phosphorous and potassium of surface was higher than subsurface,not relating to the type of purple soil and soil utilization way.The quantity of microbe_bacteria,actinomyces and mould in surface purple soil was higher than subsurface,which indicated that the organic matter and airy condition in surface soil was more suitable for microbes growing.There was the same tendency in profile change of microbe quantity in purple soil located in temperate_humid climate of Sichuan basin in contrast with dry_hot climate of Yuanmou,Yunnan.The nutrient situation of purple soil in Sichuan basin shown that state of surface was better than subsurface,while in Yuanmou of Yunnan the state was on the contrary due to the degradation of surface soil.
