Special controlled-release formula fertilizer for fruit trees

Abstract

The invention discloses a special controlled-release formula fertilizer for fruit trees. The controlled-release formula fertilizer is prepared by matching and mixing coated urea, a granular phosphatefertilizer, a granular potash fertilizer and a filler. The fertilizer is prepared from the following components in parts by weight: 10 to 40 parts of coated urea, 6 to 10 parts of P2O5, 8 to 30 partsof CaO, 5 to 20 parts of MgO, 10 to 15 parts of K2O, 0.2 to 0.6 part of zinc sulfate, 0.2 to 0.6 part of borax and 5 to 20 parts of filler. The fertilizer provided by the invention only needs to be applied once before germination of fruit trees without topdressing, so that compared with the traditional quick-acting chemical fertilizer application for five times, the special controlled-release formula fertilizer for forests and fruits is applied once as a base fertilizer before germination of jujube trees; and under the condition that the fertilizing amount is reduced by 20%, the yield of jujube trees is increased by 13.7%, the single fruit weight of jujube fruits is increased by 7.1%, the first-grade fruit rate is increased by 15.6%, the inferior-grade fruit rate is reduced by 19.8%, the fruit cracking rate is reduced by 10.2%, and the fertilizing frequency is reduced from 5 times of the traditional fertilizer to 1 time.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a special controlled-release formula fertilizer for fruit trees. Background technique [0002] Jujube is native to China and has been growing for more than 5,000 years. Jujube tree (Ziziphus jujuba Mill.) is a plant of the genus Jujube in Rhamnaceae. It has the characteristics and advantages of rich nutrition, strong adaptability, and significant economic and ecological benefits. It has become a new hot spot in the development of fruit trees. In addition, the unique natural Due to climatic conditions, Xinjiang has become one of the main areas for the production of high-quality jujube fruits. Xinjiang gray jujube has low acid content, suitable taste, high sugar content and delicious taste. People pay more and more attention to the value of gray jujube. [0003] Nitrogen is a necessary core element for the growth and development of fruit trees, because it is the key to the for...

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Problems solved by technology

[0004] Aiming at the technical status quo of jujube jujube in southern Xinjiang caused by excessive fertilizer application, increased cost of jujube, environmental pollution of chemical fertilizers, and low fertilizer utilization rate, there are no literature reports and disclosures on controlled release fertilizers for jujube in southern Xinjiang.

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