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CN-117864596-B - Nutrient solution controlled-release fertilizer-containing package for soilless culture of plants and preparation method of nutrient solution

CN117864596BCN 117864596 BCN117864596 BCN 117864596BCN-117864596-B

Abstract

The invention discloses a nutrient solution controlled release fertilizer-containing package for soilless culture of plants and a preparation method of the nutrient solution. The nutrient solution controlled-release fertilizer package for soilless culture of plants comprises a first fertilizer package body, a second fertilizer package body and a third fertilizer package body, wherein the first fertilizer package body comprises a first outer package and fertilizer particles A which are packaged in the first outer package and are used for preparing nutrient solutions, the second fertilizer package body comprises a second outer package and fertilizer particles B which are packaged in the second outer package and are used for preparing nutrient solutions, the third fertilizer package body comprises a third outer package and fertilizer particles C which are packaged in the third outer package and are used for preparing nutrient solutions, the first outer package body, the second outer package body and the third outer package body are made of water-soluble materials, and the dissolution speeds of the outer packages in water are different, so that the fertilizer particles in the fertilizer package bodies are released in the water in sequence in the process of preparing the nutrient solutions. The invention can avoid the contact and precipitation of high-concentration A, B, C liquid fertilizer elements, and can simply and rapidly prepare the nutrient solution.

Inventors

  • LI KUN
  • CHENG RUIFENG
  • TONG YUXIN

Assignees

  • 中国农业科学院农业环境与可持续发展研究所

Dates

Publication Date
20260505
Application Date
20240205

Claims (7)

  1. 1. The utility model provides a nutrient solution controlled release contains fertile packing body for plant soilless culture which characterized in that includes: a first fertilizer package body, which comprises a first outer package and fertilizer particles A which are packaged in the first outer package and are used for preparing nutrient solution, and, A second fertilizer package comprising a second outer package and B fertilizer granules enclosed in the second outer package for preparing a nutrient solution, and, The third fertilizer package body comprises a third external package and C fertilizer particles which are packaged in the third external package and are used for preparing a nutrient solution; the first outer package, the second outer package and the third outer package are made of water-soluble materials, and the dissolution speeds of the outer packages in water are different, so that fertilizer particles in the fertilizer-containing packages are sequentially released in the water in the process of preparing the nutrient solution; The water-soluble material is one or more of polyvinyl alcohol, gelatin, plant cellulose and water-soluble polysaccharide; The thickness of the first outer package, the second outer package and the third outer package is 20-30 mu m; the fertilizer particles a comprise phosphate; The B fertilizer particles comprise a calcium salt; the fertilizer particles C comprise ferric salt and trace elements.
  2. 2. The nutrient solution controlled-release fertilizer package for soilless culture of plants according to claim 1, wherein the first outer package, the second outer package and the third outer package are respectively a packaging bag or a capsule shell.
  3. 3. The nutrient solution controlled-release fertilizer package for soilless culture of plants according to any one of claims 1 to 2, wherein two or three of the first fertilizer package, the second fertilizer package and the third fertilizer package are of an integrated structure.
  4. 4. The nutrient solution controlled-release fertilizer package for soilless culture of plants according to any one of claims 1 to 2, wherein the first fertilizer package, the second fertilizer package and/or the third fertilizer package are filled with air.
  5. 5. The nutrient solution controlled-release fertilizer package for soilless culture of plants of claim 1, wherein the fertilizer particles A comprise potassium nitrate, magnesium sulfate, monopotassium phosphate and monoammonium phosphate; the fertilizer particles B comprise calcium nitrate; The C fertilizer particles include chelated iron, manganese sulfate, boric acid, copper sulfate, zinc sulfate, and ammonium molybdate.
  6. 6. The preparation method of the nutrient solution for soilless culture of plants comprises the following steps: the nutrient solution for soilless culture of plants is obtained by simultaneously placing each package body in the nutrient solution controlled release fertilizer package body for soilless culture of plants according to any one of claims 1 to 5 in a specific volume of water for dissolution.
  7. 7. Use of the nutrient solution controlled-release fertilizer package for soilless culture of plants as claimed in any one of claims 1 to 5 in soilless culture of plants.

Description

Nutrient solution controlled-release fertilizer-containing package for soilless culture of plants and preparation method of nutrient solution Technical Field The invention relates to a nutrient solution controlled release fertilizer-containing package for soilless culture of plants and a preparation method of a nutrient solution, and belongs to the technical field of soilless culture. Background Soilless culture is a cultivation technology which adopts mineral water solution (nutrient solution) as a source of essential elements for plant growth, provides necessary environment for plant root growth, can regulate and control the conditions, promotes the plant growth, obtains better yield and quality, and can prevent soil-borne diseases. Soilless culture breaks away from the limit of soil, greatly expands the space of agricultural production, enables crops to be produced on non-cultivated lands, and has been widely applied to open field, greenhouse and plant factory production. The requirements of different plants on nutrient solutions are different, and the preparation of a proper nutrient solution is a key for ensuring healthy growth of plants. However, the nutrient solution has various elements and contains more than 10 major and trace elements such as nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, manganese, iron, boron, zinc, copper, molybdenum, chlorine and the like, and the major and trace elements exist in the nutrient solution in the form of salt, and are formed by mixing different compounds such as potassium nitrate, calcium nitrate, magnesium sulfate, ammonium phosphate, potassium sulfate, monopotassium phosphate, disodium ethylene diammonium tetraacetate, ferrous sulfate, boric acid, manganese sulfate, zinc sulfate, copper sulfate, ammonium molybdate and the like, and the process is complex, so that the operability of common growers is low, and the problems are easy to occur in the raw material selection, dosage calculation and modulation mixing process to influence the plant growth. In order to realize more convenient blending application in large-scale production, the prior art distinguishes the compounds according to major elements and trace elements, meanwhile, the compound taking calcium salt as a center in the formula is defined as a liquid A formula, the compound taking phosphate as a center is defined as a liquid B formula, ferric salt and trace elements are combined together to be defined as a liquid C formula, each formula is respectively blended and packaged according to a specific proportion by a professional enterprise, a user only needs to mix the packaged fertilizer with water according to a specific proportion, namely A, B, C high-concentration mother liquor is obtained, the pH value is adjusted after the high-concentration mother liquor is mixed with water according to a specific proportion, and the fertilizer can be directly mixed with water according to a final dilution proportion to directly obtain nutrient solution (CN 112919956B and CN 112824354B). The product and the using method greatly simplify the preparation process of the nutrient solution, but in the A, B, C nutrient solution mixing process, if the high-concentration solution A and the high-concentration solution B are contacted, precipitation can be generated, the effectiveness and the cultivation effect of the nutrient solution are affected, and therefore, the preparation speed and the concentration are required to be controlled in use. With the gradual maturity of plant factory technology, related miniaturized products are expanded to various places including families, restaurants, schools and the like, operators do not have professional nutrient solution preparation technology, and a product and a method capable of simply and rapidly preparing suitable nutrient solutions are needed. The prior art mainly researches and develops the concentration control and the application speed of the nutrient solution from the two aspects of nutrient solution controlled release fertilizer preparation (CN 101857514B, CN102674930B, TWI818227B, CN101830761B, CN101857499B, CN 113637301B) and control and application equipment (CN 218218667U, CN 219087802U). However, none of the above patents is improved upon the convenience requirements of the end user. Disclosure of Invention The invention aims to provide a nutrient solution controlled release fertilizer-containing package for soilless culture of plants and a preparation method of the nutrient solution, wherein the solubility of each fertilizer particle in water is controlled, so that each fertilizer is sequentially released, and the nutrient solution can be simply and rapidly prepared by avoiding the contact of high-concentration A, B, C liquid fertilizer elements and the generation of precipitation due to chemical reaction. In a first aspect, the present invention provides a nutrient solution controlled release fertilizer package for soilless culture of plants, comprisi