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.