Special full-element trichoderma biological organic fertilizer for restoring productivity of old apple trees as well as preparation method and application thereof

Abstract

The invention discloses a special full-element trichoderma biological organic fertilizer for restoring the productivity of old apple trees as well as a preparation method and application thereof. Thefull-element biological organic fertilizer contains SQR-T037 of 2*10<7>cfu/g or more, wherein the mass ratio of total nitrogen content is 5-7.5%, organic nitrogen in total nitrogen has a mass ratio of60% or more, the mass ratio of total nitrogen phosphorus potassium nutrients is 10-15%, the mass ratio of organic matter contents is 30-40%, the mass ratio of free amino acids to small peptides is 2-3%, the water content mass ratio is less than or equal to 30%, and the pH value is 6-7. After the application of the full-element trichoderma biological organic fertilizer, the problems of uncoordinated soil nutrient supply and imbalance of micro-flora, commonly existing in older apple orchards for more than 20 years, are solved, and the fruit quality is obviously improved; the growth of new shoots and the differentiation of flower buds in the next year are promoted; the problem of less underground fibrous root systems of the old apple orchards is also solved; and the rapid growth of the underground fibrous root systems of the old apple orchards is promoted.

Description

technical field [0001] The invention belongs to the technical field of agricultural intensive production, and relates to a special whole-element trichoderma bio-organic fertilizer for restoring the productivity of old apple trees, a preparation method and application thereof. Background technique [0002] Apple (Pyrus malus L.) is one of the famous fruits in the world, and my country is the country with the highest apple yield; after my country implemented the land contract responsibility system in the 1980s, most of the apple orchards planted by fruit farmers are about 30 years old; Under normal circumstances, apple trees over 20 years old actually enter the senility period and become old apple orchards: weak tree vigor, few flower buds, severe flower and fruit drop, weak underground root growth, few first-level roots, and basic fibrous roots above the second level. No, the fruit is small, the yield is low, the quality is poor, and the obstacles to continuous cropping are ser...

AI Technical Summary

Problems solved by technology

In order to transform old orchards and increase production, fruit farmers began to cut down old trees and plant new seedlings. During

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