关键词: 引进时间, 引进时间, 营养, 受体牛, 同期发情

Abstract: The content of soil soluble salts and nutrients in the primer installing agriculture area has been determined in Shanxi province. The results show that content of soil soluble salts, available nutrients and EC volume was higher than open-land soil. The soil pH volume decreased and content of organic matter was increased just over compared to open-land soil. The content of soil total nutrients some was increased, some was decreased. The content of soil soluble salts was critical state that secondary salts and physiological hindrance of crop. The soil properties should be paying attention such as the content of organic matter was lower, the nutrients N and P increased and K decreased in the soil nutrient storage, and the “carrier ” phenomena by fertilizer was used in large quantities.