Model for optimizing nitrogen application rate of potato fields by drip irrigation in the north foot of Yinshan Mountain, Inner Mongolia, and applications thereof

Abstract

The invention discloses a model for optimizing the nitrogen application rate of potato fields by drip irrigation in the north foot of Yinshan Mountain, Inner Mongolia, and applications thereof. Nitrogen balance based nitrogen application rate optimizing model and a nitrogen fertilizer using amount optimizing and application method applying the model and nitrogen absorption law during potato growing are included. The method can reduce the traditional nitrogen application rate of farmers under the circumstance of guaranteeing that the yield of potatoes does not reduce but even slightly increases, and optimizes stage fertilization time, times and using amount according to the nitrogen absorption law of the potatoes; and through total quantity control, a stage allocation mode can optimize thenitrogen fertilizer using amount of potato fields, so that the green sustainable development of agriculture with equal emphasis on production and environmental protection can be realized while the efficient configuration of nitrogen resources is enhanced.

Description

technical field [0001] The invention belongs to the technical field of crop fertilization, relates to the management technology of scientific nitrogen fertilizer application in potato fields, and particularly relates to an optimization model and application of nitrogen application amount in drip irrigation potato fields at the northern foot of Yinshan Mountain in Inner Mongolia, and provides a nitrogen application amount optimization model based on nitrogen balance, and Applying the model and the nitrogen uptake law in the potato growth process to optimize the application method of nitrogen fertilizer amount. Background technique [0002] my country is the country with the largest potato planting area and output in the world. Among the many potato planting provinces in my country, Inner Mongolia Autonomous Region is an important part of my country's potato industry; the farmland at the northern foot of Yinshan Mountain is the main potato planting area in Inner Mongolia Autono...

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Problems solved by technology

[0004] Aiming at the excessive application of nitrogen fertilizer, unreasonable fertilization period, and unreasonable dosage in the potato planting area at the northern foot of Yinshan Mountain in Inner Mongolia, the present invention proposes a nitrogen balance-based nitrogen application optimization model, and applies the model and nitrogen absorption during the potato growth process Regular nitrogen fertilizer application method; this method not only reduces the traditional nitrogen application amount of farmers, but also adjusts the periodical fertilization time, frequency and amount according to the potato nitrogen absorption law while ensuring that the potato yield does not decrease or even slightly increases. Optimized; optimize the amount of nitrogen fertilizer used in potato fields through total amount control and stage allocation, while improving the efficient allocation of nitrogen resources, it has realized agricultural green and sustainable development that pays equal attention to production and environmental protection

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