A kind of spring corn fertilization method

Abstract

The invention discloses a spring corn fertilization method. The method is as follows: 1) determine the target yield in the target area, and calculate the nitrogen agronomic efficiency of spring corn crops in the target area; estimate the nitrogen fertilizer use amount in the target area according to the nitrogen agronomic efficiency; 2) determine the target according to the nitrogen fertilizer use amount in the target area The amount of organic fertilizer and chemical fertilizer in the area is allocated; 3) According to the allocation result of step 2), determine the type of nitrogen fertilizer and the proportion allocation of base topdressing fertilizer. On the basis of considering soil and meteorological conditions, the present invention takes into account the agronomic effect, yield benefit and environmental benefit, combines the QUEFTS model to simulate crop nutrient absorption parameters, estimates different potential yields, and is equipped with microbial fertilizer / organic fertilizer application and reasonable automatic irrigation This technology not only ensures high yields of spring corn, but also reduces the risk of nutrient leaching, reduces greenhouse gas emissions, improves soil quality, and increases microbial activity.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and in particular relates to a spring corn fertilization method for reducing environmental risks. Background technique [0002] Among the world's three major grains, the total yield and per unit yield of corn rank first in the world. The United States and China are the world's leading corn producing countries. Since 2014, China's corn planting area has surpassed that of the United States, reaching 38.12 million hectares in 2016, but Due to the low yield level of corn, China's total corn production is much lower than that of the United States. In 2016, the United States produced 385 million tons of corn, accounting for 36.1% of the world's total corn production, and China's corn production was 220 million tons, accounting for 20.6% of the world's total corn production (China Business Industry Research Institute, 2017. http: / / www.askci. com / news / chanye / 20170607 / 14115999868_2.shtml). Northeast...

AI Technical Summary

Problems solved by technology

However, due to the limitations of data sources and model applicability, the current method of using model simulation technology to optimize the rational fertilization of crops throughout the growth period is still uncommon

[0005] During the growth process of spring corn, the amount of nitrogen required for vegetative growth in the early stage is small, and the amount of nitrogen required for reproductive growth in the later stage is large. The fertilization period of corn is not consistent with the law of corn fertilizer requirement

Therefore, traditional nitrogen fertilizer application methods can no longer meet the needs of high corn yields, and how to use model simulation technology to scientifically and rationally allocate nitrogen fertilizer according to different growth stages of corn is a practical problem that this field hopes to solve. , Meteorological conditions, taking into account the agronomic benefits and environmental benefits, put forward a reasonable fertilization mode

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