A method for increasing yield of summer maize in light-moderate saline-alkali land in the Yellow River Delta by controlling salt

Abstract

The invention belongs to the technical field of agricultural production and particularly relates to a method for summer corn salt-controlled yield increase in light and moderate saline-alkali soil of the Yellow River Delta. According to the method, a summer corn fertilizer application amount and operation method, an irrigation amount and a salt-controlled yield increase water and fertilizer operation method for a corresponding irrigation principle and method are formulated according to on-site soil saline-alkali, soil fertility and climate and summer corn growth conditions in light and moderate saline-alkali soil of the Yellow River Delta. The method comprises the following steps: (1) land preparation seeding and seedling stage and jointing stage water and fertilizer operations; (2) jointing and tasseling stage water and fertilizer operations; and (3) tasseling and filling stage water and fertilizer operations. According to the method, by reasonable operations of water and fertilizer, salt adjustment and salt control, soil improvement and fertilizer supply, seedling protection and strong seedling cultivation, growth promotion and yield increase can be performed on summer corns planted in the light and moderate saline-alkali soil of the Yellow River Delta. The method has the advantages of being simple and practical, reducing cost, increasing benefit and being high in applicability and easy to popularize. The method has remarkable economic, ecological and social benefit if popularized and applied in large area in summer corn planting areas of the light and moderate saline-alkali soil of the Yellow River Delta area.

Description

technical field [0001] The invention belongs to the technical field of agricultural production, and in particular relates to a method for increasing yield of summer maize in light to moderate saline-alkali land in the Yellow River Delta. Background technique [0002] The Yellow River Delta region is an important high-efficiency ecological economic zone in my country and a key area of ​​the Bohai Granary Project. Transforming and improving the saline-alkali land in the Yellow River Delta region has great economic and social significance for expanding the area of ​​cultivated land, developing agricultural production, ensuring farmers' income and national food security. Corn is one of the important food crops in my country's agricultural production, and its output is crucial to the development of my country's national economy. Due to the limitation of regional climate conditions and soil salinity, it is difficult to expand and increase the planting area and per unit area yield ...

AI Technical Summary

Problems solved by technology

[0003] 201410815385.7 patent application discloses a cultivation method for increasing maize yield in saline-alkaline land, but the method mainly includes soil preparation, seed treatment, sowing and field management at the seedling stage, and only mentions irrigation and salt washing, fertilizer application, and water and fertilization when transplanting seedlings in soil preparation , did not consider the water and fertilizer operation planning for salt control in different growth stages of corn, nor did it consider the control limit of soil salinity in different growth stages of corn and the demand for nutrients and water in different growth stages; 201310149539. The salt-controlling fertilization method of the barley-corn rotation system is only a salt-controlling planting mode method, and its fertilizer application is only one-time application of base manure, which is likely to cause salt damage and fertilizer damage to the plow layer soil at the seedling stage of crops, affecting seedling emergence. In addition, the irrigation is only used to wash the bottom soil moisture with water and salt to create moisture before sowing, and the other growth stages of corn are not irrigated, and the method of water and fertilizer operation is not considered to adjust and control salt to ensure yield throughout the growth of corn, let alone consider the impact of nutrients and water in other growth stages of corn. need