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A kind of functional seedling raising substrate and its application

A seedling-raising substrate and functional technology, which is applied in the field of functional seedling-raising substrates to achieve the effects of reducing capital cost and labor cost, improving water use efficiency and increasing seedling emergence rate

Active Publication Date: 2021-12-21
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems existing in the existing plug seedling-raising substrates, and provide a functional seedling-raising substrate that has both water-retaining and water-saving and bonding functions, and has a certain growth-promoting effect.

Method used

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  • A kind of functional seedling raising substrate and its application
  • A kind of functional seedling raising substrate and its application
  • A kind of functional seedling raising substrate and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Using 4 kinds of water-retaining agents with different components as raw materials, the characteristics of water-retaining agents themselves were determined, and the water-retaining agents were added to the seedling matrix according to different dosages to determine the effect of water-retaining agents on the physicochemical properties of the seedling matrix. Taking into account the two situations of water shortage and waterlogging that are common in actual seedling raising, two batches of seedlings were treated with drought and waterlogging respectively. Based on the growth of seedlings, the water-retaining agent with the best characteristics and the best effect on the growth of seedlings was screened out for later compounding experiments.

[0051] Study on Characteristics of Water Retaining Agent

[0052]Determination of water absorption capacity of water-retaining agents: Weigh 1g of 4 kinds of water-retaining agents respectively, immerse them in enough deionized wat...

Embodiment 2

[0091] Considering whether organic binders or composite binders are harmful to plants or human body and cost issues, the inventors chose attapulgite and bentonite as seedling matrix binders.

[0092] Influence of Binder on Physicochemical Properties of Matrix

[0093] 4 dosages of each binder are set, namely 2%, 4%, 6% and 8% (w / w, mass ratio of binder to substrate), and the binder and the seedling substrate are fully adjusted according to the corresponding proportions. mix. As can be seen from Table 6, there is no significant difference in the change in bulk density after adding the binder to the matrix. The total porosity of the binder AT1 is the largest when the dosage is 2%, which is significantly higher than that of other treatments, and the minimum when the dosage is 8%; the addition of the binder makes the matrix ventilation pores smaller, and the CK ventilation pores are the largest, followed by the treatment AT12%, the treatment BT1 8% had the smallest aeration pore...

Embodiment 3

[0125] Water-retaining agent: water-retaining agent JS.

[0126] Binder: Binder AT1.

[0127] Three dosage gradients of 0.1%, 0.2%, and 0.3% were set for the water-retaining agent, and three dosage gradients of 2%, 4%, and 6% were set for the binder, and they were compounded in pairs to form 9 different compound combinations. The effect of different compound combinations on the physical and chemical properties of the seedling matrix, and according to the effects of different compound combinations on the growth of tomato seedlings and the quality of plug seedlings, the most suitable tomato seedling growth, the strongest water retention capacity, and the best quality of plug seedlings were selected. combination, and the appropriate dosage range.

[0128] Table 8 Different treatment group settings

[0129]

[0130] Influence of Compound Combination on Physical and Chemical Properties of Matrix

[0131] The water-retaining agent expands in volume after absorbing water and fo...

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Abstract

The invention discloses a functional seedling-raising substrate. The functional seedling-raising substrate is prepared by adding a water-retaining agent and a binder to the seedling-raising substrate; the water-retaining agent is a starch-based superabsorbent resin or potassium polyacrylate. , the binder is attapulgite. The functional matrix of the invention solves the problems of poor water retention and easy dispersal of traditional seedling matrices, not only has the strongest water retention capacity, but also can reduce the water loss of daily watering when applied in actual production, and at the same time significantly shorten the emergence time and improve the emergence rate. The seedling emergence rate reaches more than 80% on the third day; the functional seedling substrate of the invention can significantly improve water use efficiency, shorten the watering cycle, reduce the effects of drought stress and waterlogging stress on seedlings, promote seedling growth, improve seedling quality, and avoid "Tall seedlings" appear; when transplanting seedlings, improve the quality of plug seedlings, shorten the time of seedling slowing, and improve the survival rate of seedling transplanting; reduce capital costs and labor costs.

Description

technical field [0001] The invention belongs to the field of agricultural production, and relates to a functional seedling-raising substrate and its application. Background technique [0002] In my country, the economic status and cultivation area of ​​vegetables are second only to food crops, and the vegetable industry is the second pillar industry for our survival. According to the plan of the National Development and Reform Commission of the Ministry of Agriculture of China in 2012, by 2020, the vegetable planting area in my country will reach 15.66 million hectares 2 , the annual output is 580 million tons, and the per capita vegetable share reaches 400kg. A large number of high-quality vegetable seedlings is the premise to increase vegetable production. There are many kinds and varieties of vegetables in my country, and the amount of seedlings used every year reaches 400 billion. In recent years, in addition to the increasing amount of vegetable seedlings, the require...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G24/35A01G24/10
CPCA01G24/10A01G24/35
Inventor 徐阳春韦中窦亮沈其荣
Owner NANJING AGRICULTURAL UNIVERSITY