Fertilizing method for winter wheat

Abstract

The invention discloses a fertilizing method for winter wheat. The fertilizing method comprises the following steps: collecting soil data, meteorological data and management measure data of a target area; inputting the collected data into an applicability process model for simulation, and using measured output for calibration and verification of the model; determining the maximum potential targetyield of winter wheat in the target area by using the calibrated model; then determining the target yield of recommended fertilization in the target area; calculating the agronomic nitrogen efficiencyof the winter wheat crops in the target area according to the target yield; estimating the nitrogen fertilizer usage amount in the target area according to the agronomic nitrogen efficiency; determining the usage amounts and types of organic fertilizers and chemical fertilizers for the target area according to the nitrogen fertilizer usage amount in the target area; and simulating the nutrient absorption curve of the winter wheat according to the applicability process model, and determining the distribution proportion of a base nitrogen fertilizer and a topdressing nitrogen fertilizer and thevarieties of the nitrogen fertilizers according to fertilizer distribution results. The fertilizing method of the invention improves soil quality which producing agronomic effect, output benefits andenvironmental benefits.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and in particular relates to a winter wheat fertilization method for reducing environmental risks. Background technique [0002] Wheat is one of the important food crops in my country, and the majority of residents also have a preference for wheat. Statistics show that in 2010, the country's wheat sown area reached 23.5 million hectares, accounting for about 10.6% of the world's wheat sown area (China Agricultural Yearbook, 2010), which plays a decisive role in ensuring global food security. [0003] Traditional wheat fertilization In order to obtain high yields and benefits, farmers use a large amount of chemical fertilizers. Blindly excessive and unbalanced fertilization has almost become a common phenomenon, especially in some economically developed areas. A comprehensive survey of nearly 10,000 farmers in the main wheat producing areas from 2000 to 2002 showed that the average nitrogen f...

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

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