Studies on the Provincial-level Index System of Ecological Balanced Fertilization for Wheat in China

• 作者: Changhong MI Hongyan ZHENG Jian DING Ling LU Shuojin WANG Shutian LIU Xianda HOU Yanlin HOU Zhiping HUANG
• 来源期刊: 气象与环境研究:英文版
• 学科: 经济
• 关键词: Optimum yield Optimum fertilization amount Nutrient conversion rate Fertilizer utilization ratio Relative abundance-deficiency value of soil nutrient
• 年，卷（期）: 2020,（5）
• 页码范围: 111-117
• 页数: 7页
• 分类号: F42

摘要

In this paper,the index system of ecological balanced fertilization for wheat was discussed by data mining method based on this column.Three aspects of provincial average,typical province and all samples were studied,the results and conclusions were as follows:①climate condition was one of the main factors of soil formation,which was also an important basis for the division of wheat producing areas.The proportion of available nutrients was different in different wheat producing areas.This was the result of long-term climate and man-made action,and it constituted the basic fertility pattern of soil available nutrient for wheat in China.②One of the basic fertility indexes of soil for wheat in China was the proportion of available nutrients,which was the theoretical basis for adjusting the proportion of N,P and K fertilizers.③Although the total amount and proportion of available nutrients in different wheat producing areas were different,they can be adjusted to the optimum absorption ratio of wheat by fertilizing measures,so as to achieve the goal of ecological balanced fertilization such as high production and good quality.④The basic soil nutrient indexes of more than 5000 kg/hm 2 of wheat production were less than 6 of hydrolysable N/available P and less than 7 of available K/available P,and the fertilization index was that optimum K fertilization amount was 0.6-1.2 times of optimum P fertilization amount.