Controlled-releasing fertilizer for perennial orange trees, and its prepn. method

Abstract

A release-controlled fertilizer for the perennial citrus tree contains proportionally the release-controlled urea consisting of coated urea 40 and coated urea 160, the release-controlled potassium sulfate as K fertilizer, magnesium ammonium phosphate fertilizer, B fertilizer and compost. It is only applied once every year.

Description

technical field [0001] The present invention relates to a kind of fertilizer. Background technique [0002] As a perennial crop, citrus fruit trees need to be managed multiple times a year due to the alternating vegetative growth and reproductive growth in their annual cultivation management, such as germination fertilizer in spring, pre-flowering fertilizer, fruit setting fertilizer in summer, and fertilizer in autumn. Huanyang fertilizer and so on. Existing fertilization not only requires a large amount of fertilizer, but also has high cost and heavy labor, and excessive application of inorganic chemical fertilizers will also cause adverse effects such as soil compaction, fertilizer loss, environmental pollution, and fruit quality decline; Nutritional imbalance in the body, low resistance, and induction of large and small fruit trees. If the nutrient elements of compound fertilizers are improperly matched, first, it is easy to cause waste of some nutrients or lack of cer...

AI Technical Summary

Problems solved by technology

Existing fertilization not only requires a large amount of fertilizer, but also has high cost and heavy labor, and excessive application of inorganic chemical fertilizers will also cause adverse effects such as soil compaction, fertilizer loss, environmental pollution, and fruit quality decline; Nutritional imbalance in the body, low resistance, and the induction of large and small annual fruiting of fruit trees, etc.

If the nutrient elements of compound fertilizers are improperly matched, first, it is easy to cause waste of some nutrients or lack of certain nutrients, and second, it is easy to cause fertilizer damage in serious cases, resulting in phenomena such as root rot and premature tree aging.

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