A fertilization method for improving lodging resistance and grain quality of maize in cold regions

Abstract

The invention discloses a fertilization method for improving lodging resistance and grain quality of corn in cold regions. In the total amount of fertilizer used in the whole growth period of corn, the ratio of nitrogen element, phosphorus pentoxide and potassium oxide is (1.6-1.9) : 1.0: (0.7~0.9), comprising: base fertilizer application step: ridge application of base fertilizer during site preparation; seed fertilizer application step: side application of seed fertilizer when sowing; rhizosphere topdressing step: during the 20~40% leaf age index period of corn , carry out rhizosphere topdressing; the step of spraying foliar fertilizer for the first time: during the 30~50% leaf age index period of corn, spray the first foliar fertilizer; the second spraying foliar fertilizer step: at 50% of corn During the period of ~80% leaf age index, spray the second foliar fertilizer. The method can effectively improve the lodging resistance and nutrient utilization efficiency of corn, and greatly improve the yield and quality of corn kernels. The method is conducive to improving the quality and efficiency of corn production in cold regions, and is economical and applicable, easy to operate, and easy to popularize.

Description

technical field [0001] The invention relates to the technical field of corn cultivation, in particular to a fertilization method for improving lodging resistance and grain quality of corn in cold regions. Background technique [0002] Northeast China is one of the important corn producing areas in my country. Its corn production has accounted for about 40% of the total grain production in this area, and it has a very important position in the national food safety production. Scholars at home and abroad generally believe that increasing the population density and increasing the number of ears harvested per unit area are still one of the key measures to promote large-scale high-yield maize. However, with the increase of population planting density, unreasonable water and fertilizer management, improper chemical regulation, etc., all of them will have adverse effects on the growth of maize, which will lead to the decline of the lodging resistance of the population. In Northeas...

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Problems solved by technology

However, the existing corn cultivation technology has the following defects: Affected by traditional planting concepts, corn growers in cold regions mainly rely on inputting a large amount of nitrogen, phosphorus, and potassium fertilizers to ensure the yield of corn in terms of farmland nutrient management. Potassium fertilizer, and the input of medium and trace elements is generally ignored, especially the "shallow rotation and shallow plowing" farming method and continuous cropping system for many years in the arid and semi-arid corn planting ecological zone in the cold region, and the soil nutrient structure is unbalanced, which will not only lead to the lodging of the densely planted corn population The risk increases and restricts the steady increase of corn yield and the effective improvement of grain quality, which is not conducive to the sustainable development of regional agricultural economy and corn industry

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