Chloride in Soil-Plant Systems and Some Questions in Chloride-Fertilizer Application
ning yun wang ; zhang yong chun ; wu jin gui ; li qing kang

..............page:222-224

The Effect of Stubble Return on Agro-ecological System and Crop G rowth
jiang yong hong ; yu zhen rong ; ma yong liang

..............page:209-213

Dynamic of Dry Weight of Maize Roots and Root Distribution in Two Soils
yang qing hua ; gao er ming ; ma xin ming

..............page:238-240

Heavy Metal Pollution in Vegetable-Planting Soils in the Suburbs of Guiyang City, Guizhou Provinec
lu yin zuo ; wang gong

..............page:230-234

Spatial Structure Analysis of the Ratios of Trace Metal Contents in Horizons A And C of inner-Mongolian Soils
xu shang ping ; tao zuo ; cao jun ; xu fu liu ; li ben gang

..............page:230-234

Effect of Applying Rare Earth Elements on Apple Growth and Yield
wei chun zhi ; chang xiao bing ; yu ji zhou ; zhang nai ming ; gao li li

..............page:228-229

Effect of Magnetized Fly-ash Compound Fertilizer on Rice Growth
sun ke gang ; zhang zi wu ; jiao you ; huang fu xiang rong ; sun ke zhen ; guo jing shui ; wang ming tang

..............page:225-227

Current Situation of Fertilizer Application and Effect of Potassium Fertilizer on Vegetables in Sand-mulched Fields of Lanzhou
li xiao gang ; wang ping ; liu shu ying ; zhang guo sheng

..............page:220-221

Effect of Rock Phosphates From Different Sources on Rice Grown on Acidic Sulphate Soils
zuo xiao ping ; sun guang ming ; zhang cheng lin ; zheng shao ling ; yan xiao long

..............page:217-219

Forms of Inorganic Phosphorus in Grassland Soils of Western Heilongjiang Province
zhang hai jun ; shi fa qing ; dai jian jun ; wang zhao rong

..............page:214-216

Nutrient Properties in Protected Soils
liu zhao hui ; li xiao lin ; zhu hong lin ; hu zhao wu ; jiang li hua

..............page:206-208

Decomposition of organic materials in Kastanozems
zhang li juan ; liu shu qing ; li yan hui ; yao jin ping

..............page:201-205

The Significance of Clayey Layer, Its Criteria for Series Classification in the North China Plain
zhang feng rong ; huang qin ; zhang di

..............page:197-200

Establishment of GIS-Supported Expert System for Soil Suitabilit y Evaluation
liu you zhao ; xia min ; yang jian hai

..............page:193-196