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Functional seedling medium and application thereof

A seedling-raising substrate and functional technology, applied in the field of functional seedling-raising substrates, to achieve strong water retention capacity, improve water use efficiency, and improve the survival rate of seedling transplanting

Active Publication Date: 2019-01-18
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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  • Functional seedling medium and application thereof
  • Functional seedling medium and application thereof
  • Functional seedling medium and application thereof

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 the water-retaining agents were determined, and the water-retaining agents were added to the seedling-growing substrate according to different dosages, and the effects of the water-retaining agents on the physical and chemical properties of the seedling-raising substrates were determined. Considering the two situations of water shortage and waterlogging that are common in actual seedling cultivation, two batches of seedlings were subjected to drought treatment and waterlogging treatment respectively. According to the growth of seedlings, the water-retaining agent with the best own characteristics and the best effect on seedling growth is screened out for later compounding tests.

[0051] Study on the characteristics of water retaining agent

[0052]Determination of water-absorbing capacity of water-retaining agent: Weigh 1g of 4 kinds of water-retaining agents, imm...

Embodiment 2

[0091] Considering whether organic binders or composite binders are harmful to plants or human bodies and the cost, the inventors choose attapulgite and bentonite as the seedling-raising substrate binders.

[0092] Effect of Binder on Physical and Chemical Properties of Matrix

[0093] Set 4 dosages for each binder, which are 2%, 4%, 6% and 8% (w / w, the mass ratio of binder to substrate) respectively. mix. It can be seen from Table 6 that after the binder is added to the matrix, there is no significant difference in the change of the bulk density. The total porosity of binder AT1 is the largest when the dosage is 2%, which is significantly higher than that of other treatments, and the smallest is when the dosage is 8%. BT1 8% has the smallest ventilation pores, and too small substrate ventilation pores will affect the growth of seedling roots; the air-water ratio is within a reasonable range, but the overall value is high; the addition of binder has little effect on the pH o...

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% are set for the water-retaining agent, and three dosage gradients of 2%, 4%, and 6% are set for the binder, and they are compounded in pairs to form 9 different compound combinations. The effects of different compound combinations on the physical and chemical properties of seedling substrates, 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 Settings of different treatment groups

[0129]

[0130] Effects of compound combinations on the physical and chemical properties of the matrix

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

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Abstract

The invention discloses a functional seedling medium. The functional seedling medium is prepared by adding a water-retaining agent and a binding agent in a seedling medium; the water-retaining agent is starch super absorbent resin or potassium polyacrylate, and the binding agent is attapulgite. According to the functional seedling medium, the problems that a traditional seedling medium is poor inwater-retaining property and likely to scatter are solved, the water-retaining capacity is strongest, and water loss of daily watering can be reduced by applying to actual production; meanwhile, emerging time is significantly shortened, the emergence rate is improved, and the emergence rate reaches 80% or above on the third day. According to the functional seedling medium, the water use efficiencycan be significantly improved, watering cycle is shortened, the influence of drought stress and waterlogging stress on seedlings is reduced, seedling growth is promoted, the seedling quality is improved, and occurrence of tall seedlings is avoided; when the seedlings are transplanted, the plug seedling quality is improved, the seedling recovering time is shortened, and the seedling transplantingsurvival rate is improved; the cost of capital and the labor cost are reduced.

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 on which we depend for survival. According to the plan of the National Development and Reform Commission of the Ministry of Agriculture of China in 2012, by 2020, the planting area of ​​vegetables in my country will reach 15.66 million ha 2 , the annual output is 580 million tons, and the per capita vegetable possession reaches 400kg. A large number of high-quality vegetable seedlings is a prerequisite for increasing vegetable production. There are many types of vegetables in my country, and the annual use of seedlings reaches 400 billion. In recent years, in addition to the increasing amount of seedlings used for vegetables, t...

Claims

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Application Information

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Patent Type & Authority Applications(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
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