A method for increasing cotton yield by controlling salt in severe saline-alkali land in the Yellow River Delta

Abstract

The invention belongs to the technical field of agricultural production, and particularly relates to a method for yellow river delta severe saline-alkali soil cotton salinity control and production increase. The method for cotton salinity control, production increase and irrigation and fertilization planning and management is used for formulating fertilizer application amount and planning and management methods, water irrigation amount and corresponding irrigation principles and methods for on-site soil salinization, soil fertility, climate and cotton growth situation of a yellow river delta severe saline-alkali soil. The method comprises the following steps of 1, soil preparation and water irrigation salt leaching; 2, soil amelioration, fertilization and seed sowing; 3, bud stage topdressing, water irrigation and salinity control; 4, flowering and boll setting stage topdressing, water irrigation and salinity control; 5, boll opening stage topdressing, water irrigation and salinity control. According to the method, salinity adjustment and control, fertilization, soil amelioration, water and fertilizer supply, seedling protection and production increase are performed on yellow river delta severe saline-alkali soil cotton planting through reasonable irrigation and fertilization planning and management, the method has the advantages of being simple, easy, high in practicability, capable of increasing production and efficiency and saving water and fertilizer and easy to popularize, and the remarkable economic, ecological and social benefits are achieved for large-area application and popularization in a yellow river delta severe saline-alkali soil cotton planting region.

Description

technical field [0001] The invention belongs to the technical field of agricultural production, and in particular relates to a method for increasing cotton yield by controlling salt in severe saline-alkali land in the Yellow River Delta. Background technique [0002] The area of ​​severe saline-alkali land in the Yellow River Delta is an important land resource to be developed and utilized. Cotton is a cash crop with high salt tolerance. Expanding the planting area of ​​cotton in this area and increasing cotton production are important for the severe saline-alkali land in this area to realize the value and potential of land use. At the same time, cotton is also an important national economic crop and strategic material. Therefore, it is of great practical significance and value to explore and summarize the water and fertilizer operation method of cotton planting in severe saline-alkali land to control salt and increase production for the development of agricultural production...

AI Technical Summary

Problems solved by technology

[0003] The 201210054108.X application discloses a method of fertilizing cotton in severe saline-alkaline land. This method is based on returning cotton stalks to the field, applying quick-acting slow-acting fertilizers as a base, and topdressing foliar fertilizers. This method only ensures that cotton does not lack fertilizers during the entire growth period. There is no problem of salt control; the 201410697221.9 application discloses a method for planting cotton in muddy coastal heavy saline-alkali land, the method focuses on improving soil and fertilization, and the whole process controls the plant height and the number of fruit branches to increase production; the 201110231188.7 application discloses a coastal The method of planting cotton in heavy saline-alkali land mainly reduces salt through land consolidation, winter salt water freezing irrigation, spring salt water ice thawing, plastic film covering salt suppression and moisture conservation measures; 201110106539.1 application discloses a dropper method for planting cotton in severe saline-alkali land , this method adopts the water-saving and salt-controlling method of drip irrigation under mulch, and only considers the pre-sowing preparation, capillary layout, and salt control during the growth period of drip irrigation; The characteristics of salt tolerance, water and fertilizer requirements, and the water and fertilizer operation method that is light and simple, saves costs and increases efficiency, and accurately controls salt, water and fertilizer during the key growth period to achieve the purpose of salt control and increase production