Method for applying fertilizers to cotton in severe saline-alkali land

Abstract

The invention discloses a method for applying fertilizers to cotton in a severe saline-alkali land. On the basis of cotton straw return to land, the method is implemented by combination of quick-acting fertilizers and controlled-release fertilizers, combination of soil fertilizers and foliar fertilizers and combination of early-stage foliar fertilizer spray-application and late-stage foliar fertilizer spray-application. The method can guarantee effective absorption and utilization of nutrients by cotton plants during the whole growth period in the severe saline-alkali land, and can increase the fertilizer utilization rate by about 20% and the cotton yield by more than 15% while reducing the fertilizer input amount by 15-20%.

Description

technical field

[0001] The invention relates to a cotton field fertilization method, in particular to a chemical fertilizer application method for cotton planting in severe saline-alkali land. Background technique

[0002] Fertilization is an important way to increase agricultural production and income, and cotton planting in saline-alkali land is no exception. Reasonable fertilization has great potential to increase cotton yield in saline-alkali land. There have been some reports on the research on cotton fertilization methods in saline-alkali land. Among them, "Research on Cotton Planting Technology in Coastal Saline Soil" (Xu Huichun, etc., Shandong Cotton Research Center "Shandong Agricultural Science" 1995NO.4P20) discloses a method of fertilizing cotton in coastal saline soil, emphasizing the economical benefits of coastal saline soil. The method of fertilization is to increase the application of phosphorus fertilizer and nitrogen fertilizer; after that, "Study on the...