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CN-119874447-B - Moisturizing synergist for rice cultivation and seed production and preparation method and application thereof

CN119874447BCN 119874447 BCN119874447 BCN 119874447BCN-119874447-B

Abstract

The invention belongs to the field of agricultural plant growth regulators, and discloses a moisturizing synergist for rice cultivation and seed production, which comprises, by mass, 5.0-40.0 parts of a humectant, 2.0-20.0 parts of sugar, 1.2-10.0 parts of amino acid, 0.5-3.0 parts of nitrogen, phosphorus and potassium inorganic salt, 0.4-3.6 parts of a surfactant and 45.5-87.5 parts of water, wherein the humectant is a mixture of polyacrylate and glycerin. Also discloses a preparation method and application thereof in rice cultivation and seed production under the condition of dry hot air. The moisturizing synergist can continuously absorb moisture in the air even under the condition of low air humidity, thereby ensuring the moisture demand of rice leaves, pollen, stigma and other organs, improving the stigma pollen activity, avoiding damage to rice due to high nutrition concentration under the condition of dry hot air, promoting the rice growth and improving stress resistance.

Inventors

  • JIN LONGXIN
  • YUAN YUAN
  • LONG SHIPING
  • ZOU CHAOHUI
  • LI WENGE
  • DENG CHAO
  • LIU LU
  • SHAO SAI
  • ZHAO CAIFENG
  • XIE HONGKE
  • ZHANG LEPING
  • TANG JIANLIANG
  • ZHANG WEILIANG
  • KUANG XINHUA

Assignees

  • 湖南省核农学与航天育种研究所
  • 湖南亚华种业有限公司

Dates

Publication Date
20260512
Application Date
20241220

Claims (9)

  1. 1. The moisturizing synergist for rice cultivation and seed production is characterized by comprising, by mass, 5.0-40.0 parts of a humectant, 2.0-20.0 parts of sugar, 1.2-10.0 parts of amino acid, 0.5-3.0 parts of nitrogen, phosphorus and potassium inorganic salt, 0.4-3.6 parts of a surfactant and 45.5-87.5 parts of water, wherein the humectant is a mixture of polyacrylate and glycerol; the polyacrylate is sodium polyacrylate, and the mass ratio of the sodium polyacrylate to the glycerol is 1-5:1; The preparation method of the moisturizing synergist comprises the following steps of adding sugar, amino acid, nitrogen, phosphorus and potassium inorganic salt and a surfactant into water for dissolution, then adding a humectant, stirring and dissolving to form a transparent homogeneous solution, and sterilizing in 60 Co gamma-ray field with a radiation dose of 5-10 kGy.
  2. 2. The moisturizing synergist of claim 1, wherein the sugar comprises at least one of glucose, pentose, hexose, sucrose, lactose, and maltose, and the amino acid comprises at least one of glutamic acid, arginine, threonine, glycine, lysine, tryptophan, phenylalanine, and methionine.
  3. 3. The moisturizing synergist of claim 1, wherein the nitrogen-phosphorus-potassium inorganic salt comprises a water-soluble nitrogen-containing compound, a phosphorus-containing compound, and a potassium-containing compound.
  4. 4. The moisturizing synergist of claim 1, wherein the surfactant comprises a water-soluble surfactant having an HLB of greater than or equal to 7.
  5. 5. The moisturizing synergist according to claim 4, wherein the surfactant is selected from any one or more of amino acid surfactants, tween surfactants, sulfate surfactants and alkyl glucosides, wherein the amino acid surfactants are selected from any one or more of cocamide potassium glutamate and cocoyl sodium glycinate, the tween surfactants are selected from any one or more of tween 20 and tween 80, the sulfate surfactants are selected from any one or more of sodium dodecyl sulfate and sodium dodecyl polyoxyethylene sulfate, and the alkyl glucosides are selected from any one or more of dodecyl glucoside and tetradecyl glucoside.
  6. 6. The moisturizing synergist according to any one of claims 1 to 5, wherein the moisturizing synergist comprises, by mass, 12.0 to 24.0 parts of a humectant, 3.5 to 10.0 parts of sugar, 2.2 to 6.8 parts of amino acid, 0.9 to 2.0 parts of nitrogen-phosphorus-potassium inorganic salt, 1.0 to 3.0 parts of a surfactant and 45.5 to 87.5 parts of water.
  7. 7. A method for preparing the moisturizing synergist according to any one of claims 1-6, which is characterized by comprising the steps of adding sugar, amino acid, nitrogen-phosphorus-potassium inorganic salt and surfactant into water for dissolution, then adding a humectant into the mixture, stirring the mixture for dissolution to form a transparent homogeneous solution, and sterilizing the transparent homogeneous solution in a 60 Co gamma-ray field at a radiation dose of 5-10 kGy.
  8. 8. Use of a moisturizing synergist according to any one of claims 1-6 for rice cultivation and seed production in a "dry hot air" climate.
  9. 9. The use according to claim 8, wherein the moisturizing synergist is diluted by 50-500 times and sprayed in the booting stage of rice, wherein the spraying position is the overground part of rice.

Description

Moisturizing synergist for rice cultivation and seed production and preparation method and application thereof Technical Field The invention belongs to the field of agricultural plant growth regulators, and particularly relates to an environment-friendly type moisture-preserving synergistic agent for rice cultivation and seed production, and a preparation method and application thereof. Background Many researches on improving the yield of rice or other crops by using a base fertilizer or a water-soluble foliar fertilizer are carried out, however, the meaning of the research purpose is not aimed at the yield reduction caused by the harm of dry hot air, the technical approach for realizing the research purpose is single, the nutrition of plants is mainly increased from the perspective of plant nutrition so as to achieve the purpose of increasing the yield, and the application scenes of the products do not have the dry hot air. Therefore, technical researches for preventing the disaster of dry hot air and improving the yield and quality of rice cultivation or hybrid rice seed production are specially developed in a targeted manner, the problem of rice yield reduction caused by the dry hot air is solved, and the method has important significance for guaranteeing the rice seed supply and grain safety in China. The rice reproductive growth period is the most sensitive period to high temperature, the high temperature is easy to cause the maldevelopment of rice pollen, the cracking rate of anthers is reduced, the abnormal growth of pollen tubes and the reduction of pollen germination rate are caused, the female and male fertilization is blocked, the reduction of the seed setting rate of the rice is particularly caused, the high-temperature dry hot air weather in the hybrid rice seed production heading stage plays a decisive role in seed production yield, and the high-temperature dry hot air weather can cause the reduction of the yield by more than 40 percent, meanwhile, the weather such as low humidity, high wind speed and the like also influence the flowering and the powder scattering of the rice, and are unfavorable for the outcrossing of female parent, however, the current cultivation method or technology (reasonable fertilization, irrigation management, pest control, disaster prevention and reduction measures, plant growth hormone application and the like) for improving the seed setting rate of the rice is difficult to obtain good effect, especially in the weather condition of 'dry hot air', the condition is extremely unfavorable for the absorption of the rice to leaf fertilizer due to the instant evaporation loss of leaf surface moisture of the rice, and the damage to the rice caused by the leaf fertilizer concentration. Therefore, the intensive research solves the problem of serious yield reduction of rice cultivation or breeding caused by 'hot air in south China' (also called dry hot air), and has important practical significance. In fact, whether the water-soluble polymer moisturizing material composite technology can solve the problem of rice yield reduction caused by 'dry hot air' or not is not reported in literature data, and the main reason is that the molecular size of the water-soluble polymer is larger than that of the water-soluble inorganic salt, and the polymer moisturizing material composite technology can cause the problems that the ventilation holes of plant leaf surfaces are blocked by the polymer material to influence respiration, shield illumination to influence photosynthesis, prevent plant nutrition absorption and the like, so that researchers neglect the research on the functions and effects of the polymer moisturizing material composite technology for plant moisturizing yield increase. But is only used in the food or cosmetic moisturizing or other fields, so far, no special prevention and treatment agent for overcoming the harm of dry hot air for rice is available in China. Disclosure of Invention Aiming at the problem of yield reduction caused by extreme weather dry hot air of rice, the invention provides an environment-friendly type moisturizing synergist for rice cultivation and seed production, a preparation method and application thereof. In order to solve the technical problems, the technical scheme provided by the invention is as follows: The moisturizing synergist for rice cultivation and seed production comprises, by mass, 5.0-40.0 parts of a humectant, 2.0-20.0 parts of sugar, 1.2-10.0 parts of amino acid, 0.5-3.0 parts of nitrogen, phosphorus and potassium inorganic salt, 0.4-3.6 parts of a surfactant and 45.5-87.5 parts of water, wherein the humectant is a mixture of polyacrylate and glycerol. Preferably, the polyacrylate is sodium polyacrylate, and the mass ratio of the sodium polyacrylate to the glycerin is 1-5:1. Preferably, the sugar comprises at least one of glucose, pentose, hexose, sucrose, lactose and maltose, and the amino acid comprises at least one of glutamic acid