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CN-121970564-A - Innovative integration method for stress-resistant seed treatment of wheat late-sowed in coastal saline-alkali soil and functional seed product

CN121970564ACN 121970564 ACN121970564 ACN 121970564ACN-121970564-A

Abstract

The invention discloses a stress-resistant seed treatment integration method for wheat late-sowed in coastal saline-alkali soil and a functional seed product. The integrated method comprises four steps of seed soaking activation, accurate moisture regulation, low-temperature preservation and extension window and composite stress resistance function construction which are sequentially executed, systematically prolongs the safe sowing window period of the seeds after germination from 3 days to 6 days, and endows the seeds with strong salt resistance. The obtained functional seed product has specific water content and composite stress-resistant coating, and shows high seedling rate and strong seedling quality under the condition of late sowing in coastal saline-alkali soil. The invention realizes unification of the process, the function and the product, and effectively solves the problem of seedling protection in the later sowing of the saline-alkali soil.

Inventors

  • MAO FUHAI
  • MAO XUNDONG
  • TANG BOPING
  • CHU RUI
  • LIU WEI
  • ZHANG XUEQING
  • GAO LIHU

Assignees

  • 盐城师范学院

Dates

Publication Date
20260505
Application Date
20260224

Claims (10)

  1. 1. An integration method for stress-resistant seed treatment of wheat late-sown in coastal saline-alkali soil, comprising the following steps performed in sequence: (a) Soaking wheat seeds in clear water at 15-20 ℃ for 8-10 hours, draining, and accelerating germination for 12-18 hours under the conditions of 16-22 ℃ and moisture preservation until the white percentage of the seeds is more than or equal to 85% and the length of radicle is less than or equal to 0.5mm; (b) A precise moisture regulating step of spreading and airing the seeds treated in the step (a) and controlling the moisture content of the seeds to be 28-30 percent (based on the weight of wet basis); (c) The composite stress-resistant function construction step is to coat the seeds preserved in the step (c) by using a composite function seed dressing agent, wherein the composite function seed dressing agent comprises a bactericidal insecticide, a porous mineral carrier and seaweed-derived biological hormone.
  2. 2. The integrated process of claim 1, wherein in step (b), the seed moisture content is controlled to 29% ± 1%.
  3. 3. The integrated process of claim 1, wherein the preservation conditions in step (C) are a through-air drying environment at a temperature of 6 ℃ to 20 ℃.
  4. 4. The integrated process of claim 1 wherein the shelf life of step (c) is 3-6 days.
  5. 5. The method according to claim 4, wherein the step of constructing the composite stress-resistant function and the subsequent sowing are performed on the 3 rd to 6 th days of the storage period.
  6. 6. The integrated process according to claim 1, wherein the porous mineral carrier is selected from diatomaceous earth, bentonite or a combination thereof in an amount of 100g to 150g per 100kg of seeds.
  7. 7. The integrated process of claim 1, wherein the seaweed-derived biostimulant is seaweed extract in an amount of 40mL to 80mL per 100kg seed.
  8. 8. The integrated method of claim 1, wherein the bactericidal insecticide comprises difenoconazole, fludioxonil and thiamethoxam.
  9. 9. The integration method of claim 1, wherein step (d) is performed 6-12 hours prior to sowing.
  10. 10. The integrated process according to claim 1, characterized in that it is suitable for areas of a cultivation layer with a salt content of 0.2% to 0.35%, the porous mineral carrier is used in an amount of 120g to 150g per 100kg seed and/or the seaweed-derived bio-stimulus is used in an amount of 60mL to 80mL per 100kg seed.

Description

Innovative integration method for stress-resistant seed treatment of wheat late-sowed in coastal saline-alkali soil and functional seed product Technical Field The invention relates to the technical field of agricultural planting, in particular to an innovative integration method for stress-resistant seed treatment, and especially relates to an integration treatment method and product for improving salt resistance of wheat seeds, prolonging the physiological activity preservation window period of the wheat seeds and finally obtaining high-performance functional seed products under the condition of late sowing in coastal saline-alkali lands. Background In rice and wheat rotation areas such as middle and downstream of Yangtze river, the wheat sowing period is delayed to be 11 late in month due to the delay of harvesting of previous rice, and the accumulated temperature is seriously insufficient before winter. In order to strive for effective accumulated temperature, the technique of seed soaking and germination accelerating is widely applied. For example, zhu Xin et al propose a technical scheme in the advantages and technical key of germination accelerating of late wheat seed soaking (2020), the core of which comprises soaking seeds in clear water, accelerating germination at a proper temperature, airing and sowing, and explicitly require that the seeds after germination accelerating should be sowed within 3 days to prevent the activity from decreasing. However, when the above-mentioned general technique is directly applied to coastal saline-alkali soil with a severe soil environment, there are the following drawbacks that are difficult to overcome: 1. The agricultural fault tolerance is poor, the strict 3-day sowing window cannot be ensured in autumn sowing season due to weather, machinery and other factors, and the vitality of the seeds preserved in an over-period is obviously declined. 2. The salt damage is overlapped with the germination fragile period, namely, the seed radicle after germination accelerating and exposure loses seed coat protection, and is directly exposed to a soil solution with high salt and high osmotic pressure, so that salt damage type bud rot and seedling hardening are extremely easy to occur. 3. The key step of moderate airing lacks quantitative standard, and improper water control directly affects the seeding operation and seed vitality. 4. The salt-resistant measures are single, the subsequent treatment is dependent on chemical pesticides, the physical isolation and physiological induction mechanism aiming at salt stress are lacked, the effect is limited in a heavy salt spot area, and seeds with stable stress resistance are difficult to obtain. Therefore, there is an urgent need in the art for an integrated treatment technology that can systematically extend the safe window period of active seeds and integrate multiple salt-resistant barriers, ultimately obtaining high stress-resistant functional seeds. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides an integrated seed treatment method for systematically solving the seedling protection problem of wheat late-sowed in coastal saline-alkali soil. The method has the core aims of prolonging the safe sowing window period of seeds in a breakthrough way through the cooperation of physiological activation, precise water regulation and low-temperature preservation, and endowing the seeds with strong stress resistance through the compound treatment of chemical-physical-physiological triple cooperation on the basis. It is another object of the present invention to provide a wheat seed product with specific physiological status and excellent stress resistance, which is produced by the above integrated process. In order to achieve the aim of the invention, the invention adopts the following technical scheme: The first aspect provides a stress-resistant seed treatment integration method for wheat late-sowed in coastal saline-alkali soil, which is characterized in that the salt content of a plough layer of the coastal saline-alkali soil is 0.2-0.45%, and the pH value is 8.0-8.6, and the integration method comprises the following steps of: (a) Soaking wheat seeds in clear water at 15-20 ℃ for 8-10 hours, draining for 8-10 hours, and accelerating germination under 16-22 ℃ and moisturizing conditions for 12-18 hours until the white percentage of the seeds is more than or equal to 85% and the length of radicle is less than or equal to 0.5mm, so as to finish physiological activation; (b) A precise moisture regulating step of spreading and airing the seeds treated in the step (a), and precisely controlling the moisture content of the seeds to be 28-30% (based on the weight of wet basis) through ventilation and stirring; (c) An activity maintenance and window period prolongation step, namely placing the seeds regulated and controlled in the step (b) in a ventilated and dried environment with the tempera