Zaoxiang pomelo magnesium deficiency repair method

Abstract

The invention relates to a Zaoxiang pomelo magnesium deficiency repair method. The method comprises the following steps that 1, one-time basal application is conducted before germination of Zaoxiang pomelos, wherein basal application includes three-nutrient compound fertilizer and magnesium containing fertilizer; 2, leaf sample collecting and content measurement are conducted, wherein leaf samplesare collected, and the chlorophyll content and element content of the leaf samples are measured; 3, fruit sample collecting and quality measurement are conducted, wherein fruit samples are collected,and the total sugar content, soluble solid content, total acid content, Vc content, juice yield and edible rate of the fruit samples are measured; 4, data denoising is conducted; 5, fertilizer supplementing is conducted, wherein according to the determined element content and fruit quality data, whether or not the magnesium content reaches a good value is judged, and whether or not magnesium fertilizer needs to be supplemented is determined. The method has the advantages that leaf yellowing, winter old leaf fall off and too small fruits which are caused by magnesium deficiency can be effectively treated; the magnesium content of a Zaoxiang pomelo tree body is increased; the single fruit weight, yield and quality of the Zaoxiang pomelos can be significantly improved, and the appropriatelyapplied magnesium fertilizer types and the magnesium fertilizer and medium and micro nutrient element combining application technology are provided.

Description

technical field [0001] The invention belongs to the field of agricultural fertilization, and in particular relates to a method for repairing magnesium deficiency of zaoxiang pomelo. Background technique [0002] Yongjia Zaoxiang pomelo is a local name pomelo selected and bred in the 1980s. It is an early-maturing pomelo variety approved by the Zhejiang Provincial Crop Variety Committee and is one of the excellent pomelo variety resources in my country. Zaoxiang pomelo orchards are mainly established in mountainous and hilly areas, with poor soil conditions and poor mineral nutrients. Excessive application of nitrogen, phosphorus, and potassium fertilizers and reduction of organic fertilizers, plus the neglect of medium and trace mineral elements in tree nutrient management , induced magnesium deficiency in Zaoxiang pomelo orchard. It is mainly manifested in the yellowing of old leaves, irregular yellow spots on both sides of the main veins, and the green area at the base of...

AI Technical Summary

Problems solved by technology

The magnesium needed for plant growth mainly comes from the soil. Affected by factors such as high temperature, rainy and strong soil acidity, the magnesium in the soil is easily leached and lost, resulting in a decrease in the yield and quality of tobacco leaves, cabbage, and citrus.

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