THE ECOLOGICAL CONDITIONS OF SPRING WHEATAND THEIR IMPROVEMENT IN NINXIA S IRRIGATINGAREAS ALONG THE YELLOW RIVER
宁夏引黄灌区春小麦的生态条件分析及其改善途径

The relationship between spring wheat and ecdogical conditions is made researched from the aspects cf agricultural activities, varieties of the spring wheat eutrophic water of the Yellow River, salinization of soil, climate,and so on.The key factors limiting the potential productivity of wheat are the disorder of three important factors draw and drain, land utilization and soil fertilization and with the rational read just ment of the proportion of agriculture, forestry and animal husbandry in these areas.T...