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A method for promoting rapid germination and salt resistance of rice seeds in coastal saline-alkali land

A technology for rice seeds and saline-alkali land, applied in germination equipment, etc., can solve the problems of weak seedling resistance to salt, poor population building, and low emergence rate, so as to improve germination and salt resistance, solve the problems of low emergence rate and easy operation Effect

Inactive Publication Date: 2017-09-26
QINGDAO AGRI UNIV
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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 overcome the bottleneck problems of low seedling emergence rate, weak seedling salt resistance ability and poor population construction leading to low rice yield in the process of direct seeding cultivation of rice seeds in coastal saline-alkali land, and to provide a method for promoting rapid germination and resistance of rice seeds in coastal saline-alkali land. The method of salt capacity, using this method can increase the germination rate of rice on the coastal saline-alkali land, and the embryo and radicle will grow early and quickly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: the germination experiment of rice (Shengdao 20) seed

[0015] Operation method and process: first utilize the hydrogen peroxide of mass fraction 10% to soak paddy rice (Shengdao 20) seed 20 minutes, then soak in water for 8 hours, soak the paddy seed after disinfection with 2mmol / L NaCl solution for 15 minutes, then Rice seeds were mixed with proline (20mmol / L) and sulfosalicylic acid (0.5mmol / L) (dissolve proline and sulfosalicylic acid in water to make the concentrations 20mmol / L L and 0.5mmol / L) seed soaking 1 hour; Use gibberellin (70mg / L) aqueous solution to soak seed 1 hour again; Then the rice seed after soaking is spread on the seedling tray, then the seedling tray is placed on humidity 70%, After 24 hours at a temperature of 25°C and a 120mmol / L NaCl solution environment; for the control, the traditional seed soaking method was used for 12 hours (soaking seeds in deionized water), and then placed in a humidity of 70%, a temperature of 25°C, and a...

Embodiment 2

[0019] Embodiment 2: the germination experiment of rice (Shengdao 20) seed

[0020] Operation method and process: first utilize the hydrogen peroxide of mass fraction 15% to soak paddy rice (Shengdao 20) seed 30 minutes, then after soaking in water 10 hours, use 5mmol / L NaCl solution to soak the paddy rice seed after disinfection for 30 minutes, then Soak the rice seeds with a mixture of proline (20mmol / L) and sulfosalicylic acid (0.5mmol / L) for 1 hour; then soak the seeds with gibberellin (70mg / L) solution for 2 hours; The last rice seed is laid on the seedling tray, and then the seedling tray is placed on 70% humidity, 25° C. of temperature, 120mmol / LNaCl solution environment for 24 hours; the traditional seed soaking mode (deionized water soaking) for 12 hours is used for comparison. Carry out, then put in humidity 70%, temperature 25 ℃, 120mmol / LNaCl solution after 24 hours; Observe seed germination rate and growth condition of embryo and radicle.

[0021] The result show...

Embodiment 3

[0024] Embodiment 3: the germination experiment of rice (Shengdao 20) seed

[0025] Operation method and process: first utilize the hydrogen peroxide of mass fraction 15% to soak paddy rice (Shengdao 20) seed 30 minutes, then after soaking in water 10 hours, use 5mmol / L NaCl solution to soak the paddy rice seed after disinfection for 30 minutes, then Rice seeds were mixed with proline (45mmol / L) and sulfosalicylic acid (2.0mmol / L) (dissolve proline and sulfosalicylic acid in water to make the concentrations 45mmol / L L and 2.0mmol / L) soaked seeds for 2 hours; then soaked seeds with gibberellin (200mg / L) aqueous solution for 2 hours; then the rice seeds after the soaked seeds were spread on the seedling tray, and then the seedling tray was placed on a humidity of 70%, After 24 hours at a temperature of 25°C and a 120mmol / LNaCl solution environment; as a comparison, the traditional seed soaking method (deionized water soaking) was used for 12 hours, and then placed in a humidity ...

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Abstract

The invention discloses a method for promoting rapid germination and salt resistance ability of rice seeds in coastal saline-alkali land. First soak the rice seeds with 10-15% hydrogen peroxide aqueous solution for 20-30 minutes, then soak the rice seeds in water for 8-10 hours, and then use 2-5mmol / L NaCl aqueous solution to soak the rice seeds after water soaking for 15-30 minutes. 30 minutes, then soak the rice seeds with an aqueous solution containing 20-45mmol / L proline and 0.5-2mmol / L sulfosalicylic acid for 1-2 hours, and then soak the rice seeds with a 70-200mg / L gibberellin aqueous solution After 1 to 2 hours, the soaked rice seeds are germinated, and the germinated rice seeds are sown into large fields on coastal saline land. The present invention quickly improves the germination and salt resistance of rice seeds by using the mixed solution prepared by proline and sulfosalicylic acid after the salt shock treatment of rice seeds and soaking the seeds with gibberellin, and solves the problem of direct seeding of rice seeds in coastal saline-alkali land The bottleneck problem of low germination rate has important practical application value.

Description

Technical field: [0001] The invention belongs to the field of rice planting, and in particular relates to a method for promoting rapid germination and salt resistance of rice seeds in coastal saline-alkali land. Background technique: [0002] my country currently has a large food gap, which requires a large amount of imports, and insufficient arable land resources, which restricts the sustainable development of my country's food. However, saline-alkali soil in my country has a large area and is an important reserve cultivated land resource. The development and utilization of saline-alkali soil resources has become an important way to ensure food security in my country. [0003] Coastal saline-alkali land resources are important reserve soil resources in my country. As the Bohai Sea granary rises to a national strategy, using saline-alkali land to increase grain production is an important way. In the process of utilization of coastal saline-alkali land resources in northern ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C1/02
Inventor 丁效东刘君王凯荣宋宁宁李绍静
Owner QINGDAO AGRI UNIV