A Model-Based Optimal Fertilization Method for Dryland Potatoes

A technology for recommending fertilization and potato, applied in the field of agricultural resources and environment

Active Publication Date: 2020-06-23
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is suitable for the planting mode with small farmers as the main management in my country, and overcomes the technical problems of the existing fertilization methods

Method used

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  • A Model-Based Optimal Fertilization Method for Dryland Potatoes
  • A Model-Based Optimal Fertilization Method for Dryland Potatoes
  • A Model-Based Optimal Fertilization Method for Dryland Potatoes

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Experimental program
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Effect test

Embodiment 1

[0074] Embodiment 1 field verification test

[0075] From January to December 2017, 46 trials of recommended fertilization methods for potatoes were carried out in six provinces of Heilongjiang, Jilin, Gansu, Inner Mongolia, Shanxi and Jiangxi. Before planting potatoes, investigate the planting situation of each test site to understand the fertilization and yield in previous years, determine the target yield and soil basic nutrient supply level according to the survey results, and calculate the yield response recommendation through this optimized recommended fertilization method (NE) The amount of fertilizer applied (see Table 3), and the local soil testing formula fertilization treatment (ST) and farmers' customary treatment (FP) were set as controls (26 test points in three places). The area of ​​the plot is 30m2. Farmers are accustomed to the treatment and select local potato growers for experiment layout and investigation and yield measurement.

[0076] The results of fer...

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Abstract

The invention relates to a optimized recommended fertilizer application method for potatoes. The recommended fertilizer application method comprises the steps: 1) determining the target yield; 2) determining the supply level of basic nutrients in soil of a known plot; 3) calculating the yield response of the known plot according to many-year multipoint element reduction experiments; or estimatingthe yield response of the known plot according to the supply level of the basic nutrients in the soil of the known plot and a yield response coefficient of the potatoes; and 4) respectively calculating the usage amounts of nitrogen, phosphorus and potassium fertilizers required for obtaining the target yield of the potatoes in the know plot according to the potato optimal nutrient absorption capacity obtained based on a QUEFTS model in combination with the target yield, fertilizer application yield response and agronomy efficiency. The method is not only suitable for an operation model that small farmers serve as main bodies in China, but also capable of realizing regional-scale fertilizer recommendation so as to be an important approach for realizing yield and efficiency increment of thepotatoes and improving the comparative advantages of the potatoes.

Description

technical field [0001] The invention relates to a model-based method for optimizing and recommending fertilization of potatoes in dry land, belonging to the field of agricultural resources and environment. Background technique [0002] my country is the largest potato producer in the world, with the planting area and total output ranking first in the world, but there is still a certain gap between the output per unit area and developed countries. Improving the level of nutrient management is an effective way to further increase potato yields. However, there are currently problems such as partial application of nitrogen fertilizers and imbalances in phosphorus and potassium nutrients in potatoes in my country. Unreasonable application of fertilizers not only affects the further increase of potato yields, but also leads to low fertilizer use efficiency and environmental pollution. pollution etc. Therefore, establishing a scientific and effective recommended fertilization metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C21/00
CPCA01C21/005A01C21/007
Inventor 何萍仇少君徐新朋周卫
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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