Method for quickly determining fertilization amount of cabbage

Abstract

The invention provides a method for quickly determining the fertilization amount of cabbage. The method comprises the following steps: 1) determining the target yield of cabbage according to the previous cabbage yield level of a plot; 2) determining the nutrient supply grade of soil and the yield responses of nitrogen, phosphorus and potassium nutrients; 3) calculating the recommended fertilization amounts of nitrogen, phosphorus and potassium needed for achieving the target yield of cabbage on the basis of fertilizer demands for basic yield, the yield responses, agronomic efficiency, the nutrient supply grade of soil, and the balance factors of nutrient residues in the preceding crops returning to a field and crops in the season; and 4) carrying out fertilization on cabbage according to the recommended fertilization amounts. The method of the invention can resolve contradictions among crop yield, environmental protection and sustainable use of farmland; and on the basis of guaranteeing crop yield, the method coordinates the balanced feeding of N, P and K elements, improves fertilizer utilization efficiency and reduces the environmental loss of nutrients. The method is applicable to recommended fertilization of cabbages planted in field pieces of different sizes, and has the advantages of good timeliness, simplicity, economic performance, easiness in mastering, a wide application scope, etc.

Description

technical field [0001] The invention belongs to the field of agricultural resources and environment, and in particular relates to a method for quickly determining the fertilization amount of cabbage. Background technique [0002] Chinese cabbage, commonly referred to as Chinese cabbage, is native to northern China and is a vegetable of the genus Brassica in the family Brassicaceae. Cabbage is eaten with tender leaf balls, rosette leaves or flower stems. It is rich in B vitamins, vitamin C, calcium, iron, zinc and other nutrients. It is one of the important vegetable types that people often eat. Cabbage is cultivated in all parts of the north and south, and its cultivation area and consumption rank first among all kinds of vegetables in China. [0003] In the process of cabbage cultivation, people tend to blindly excessive or unbalanced fertilization in order to pursue high yield. It not only causes waste of fertilizer resources, but also reduces the utilization rate of fer...

AI Technical Summary

Problems solved by technology

However, the soil test method needs to collect soil samples. The representativeness of the soil samples directly affects the determination of the amount of fertilizer applied. After the samples are collected, the laboratory analysis takes a long time and is expensive, and farmers are not motivated to use them. The fertilizer effect function method requires There is a certain amount of data accumulated in the early stage, and it is difficult to carry out without the guidance of agricultural technology extension professionals.

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