四川之土壤与农业PDF电子书下载

ITRODUCTION;ITINERARY 1

GEOGRAPHICAL SKETCH 2

CLIMATE 4

GEOLOGY 15

SOILS 26

CROPPING AND LAND UTILISATION 45

MANURING AND THE USE OF FERTILISERS 66

SOIL EROSION:SOIL AND WATER CONSERVATION 76

ANIMAL HUSBANDRY 87

AGRICULTURAL RESEARCH STATIONS 92

SUGGESTIONS AND RECOMMENDATIONS 103

BIBLIOGRAPHY 123

APPENDICES:Ⅰ．PROVINCIAL SUGAR CANE RESEARCH STATION,NEIKIANG 125

Ⅱ．FIELD EXPERIMENTS ON SOIL FERTILITY AND MANURING 132

Ⅲ．WINTER WATER LAND 146

Ⅳ．SOIL AND WATER CONSERVATION,WATERSHED PROJECTS 150