Fertilizer application method for improving saline-alkali soil peanut yield

Abstract

The invention belongs to the technical field of plant cultivation, and particularly discloses a fertilizer application method for improving a saline-alkali soil peanut yield. The fertilizer application method comprises the following steps of: selecting a calcium fertilizer, an organic fertilizer, a nitrogen fertilizer and a phosphate fertilizer as level factors to carry out a four-level three-repetition orthogonal experiment; during a legume period, measuring each processing net photosynthetic rate, a SPAD (Soil and Plant Analyzer Development) value and an agronomic character; and during a harvesting period, measuring a yield, and measuring agronomic characters, including main stem height, lateral branch length and the like so as to determine different fertilizer ratios for improving peanut main steam height, the SPAD value, a leave net photosynthetic rate, the dry weight of the overground part of the peanut and the dry weight of a peanut individual plant legume so as to determine thefertilizer application method for improving the saline-alkali soil peanut yield. The yield of the peanuts cultured by the fertilizer application method is improved by 15.6%-21.5%. According to the method, a use amount of fertilizers is lowered, an organic fertilizer is additionally applied, and a proper fertilizer ratio is adopted so as to alleviate saline-alkali harm, fertilize soil, improve theyield of the peanuts and alleviate the security contradiction of edible oil.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation, and in particular relates to a fertilization method for improving peanut yield in saline-alkali land. Background technique [0002] Peanut is an important economic crop and oil crop in China, and it is planted in Henan, Shandong, Hebei, Liaoning, Guangdong, Hunan and other places. With the development of the economy and the improvement of the people's demand for materials, the demand for peanuts is increasing year by year. Expanding the planting area of ​​peanuts on the original cultivated land will inevitably increase the contradiction between grain and oil. Salt ion stress and barrenness coexist in saline-alkali soil. Increasing the amount of fertilizer can increase the yield of peanuts. However, excessive fertilization will significantly reduce the utilization rate of fertilizer on the one hand, and on the other hand, cause waste of resources, increase agricultural production costs, ...

AI Technical Summary

Problems solved by technology

Salt ion stress and barrenness coexist in saline-alkali soil. Increasing the amount of fertilizer can increase the yield of peanuts. However, excessive fertilization will significantly reduce the fertilizer utilization rate on the one hand, and on the other hand, cause waste of resources, increase agricultural production costs, eutrophication of water bodies, and greenhouse gas A series of environmental problems such as excessive discharge, secondary salinization of soil and aggravation of pests and diseases

Images