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Dual drought resistant seed coating agent

A double-coating technology, applied in seed coating/seed dressing, biocide, animal repellent, etc., can solve problems such as low water absorption rate, limited application range of pelleted seeds, limited water storage capacity, etc. Achieve the effect of low cost, simple adjustment, simple and convenient operation

Inactive Publication Date: 2012-05-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the method of absorbing and accumulating water from the soil by water-absorbing agents only improves the drought resistance of seeds from the aspect of physical water absorption. In addition, traditional water-absorbing agents such as fulvic acid, sodium polyacrylate, and carboxymethyl cellulose have low water absorption ratios. (below 600 times), the water storage capacity is limited, which limits the scope of its application on pelletized seeds

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1 Preparation of poly 2-acrylamido-2-methylpropanesulfonic acid powder

[0038] N 2 Add 100g of water, 35g of 2-acrylamido-2-methylpropanesulfonic acid, 12g of sodium hydroxide, 0.014g of potassium persulfate and 0.105g of N,N'-methylenebisacrylamide in a 500ml round-bottom flask under protection Heating and heating reaction for 12-24 hours, wherein the temperature is 50°C for 2-4 hours, the temperature is 60°C for 2-4 hours, the temperature is 70°C for 8-16 hours, the reaction product is dried at 60°C for 48 hours, and crushed through a 100-mesh sieve to obtain poly 2 - Acrylamido-2-methylpropanesulfonic acid powder about 45 g.

Embodiment 2

[0039] Example 2 Preparation of water retaining agent

[0040] Swell 30g of poly 2-acrylamido-2-methylpropanesulfonic acid powder in 2000mL salicylic acid solution with a concentration of 10mg / L for 24h, take it out and dry it at 60°C for 48h, crush it through a 100-mesh sieve to obtain loaded salicylic acid Acidic poly 2-acrylamido-2-methylpropanesulfonic acid powder 30.78g, the mass ratio of salicylic acid and poly 2-acrylamido-2-methylpropanesulfonic acid is 0.026:1.

Embodiment 3

[0041] Example 3 Preparation of seed coating

[0042]Take 1.5g of the water-retaining agent prepared in Example 2, mix with 68.95g of talcum powder and 29.55g of bentonite evenly to obtain 100g of seed coating agent.

[0043] In this embodiment, the water-retaining agent accounts for 1.5% of the total mass of the coating auxiliary material and the water-retaining agent.

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Abstract

The invention provides a dual drought resistant seed coating agent, comprising water-retaining agent and dressing accessory. The water-retaining agent contains salicylic acid and poly2-acrylamine-2-methyl propanesulfonic acid. The invention further provides a preparation method of the water-retaining agent. Compared with a prior art, the invention has the following advantages of: convenient and easy operation, simple adjustment without changing an original pelleting process flow, no requirement on updating equipment and low cost. The dual drought resistant pelleted seed prepared from the seed coating agent has no appearance difference with a common pelleted seed, but substantially enhanced drought resistance.

Description

technical field [0001] The invention relates to seed treatment and pilling technology, in particular to a double drought-resistant seed coating agent. Background technique [0002] Seed pelleting technology is a new seed treatment method. my country began to study seed coating agents in the 1980s and applied them to different crops. In the early 1990s, it began to promote tobacco pelleted seeds. Now the national application rate of tobacco pelleted seeds has reached about 90%. Coated and pelleted seeds of various crops have achieved remarkable results in agricultural production. [0003] At present, the main idea and principle of the development of drought-resistant pelleted seeds is to add a water-absorbing agent (such as fulvic acid) to the coating agent. When irrigation or rain occurs, the water-absorbing agent absorbs water from the soil to form a "small reservoir". During drought, water flows from the "little reservoir" to be used by seeds or seedlings. [0004] The ...

Claims

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Application Information

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IPC IPC(8): A01N37/40A01N25/10A01P21/00A01C1/06
Inventor 胡晋崔华威关亚静祝水金胡伟民
Owner ZHEJIANG UNIV
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