Application of nitrogen-fixing blue-green algae to improvement of emergence quality of seed sweet potatoes

A technology for nitrogen-fixing cyanobacteria and sweet potatoes, which is applied in the direction of seed coating/seed dressing, etc., can solve the problems of long time consumption and high labor cost, and achieve the effects of short time consumption, fast processing and obvious increase in production

Inactive Publication Date: 2019-01-18
卢梅雅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since then, people's research on nitrogen-fixing cyanobacteria growth-promoting substances has been limited to seed soaking and seedling spraying, but seed soaking generally takes 24 hours, and after soaking, the seeds must be dried before planting, which takes a long time and requires high labor costs.

Method used

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  • Application of nitrogen-fixing blue-green algae to improvement of emergence quality of seed sweet potatoes
  • Application of nitrogen-fixing blue-green algae to improvement of emergence quality of seed sweet potatoes

Examples

Experimental program
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Embodiment 1

[0030] Nitrogen-fixing Anabaena 119 (provided by Wuhan Institute of Hydrobiology, Chinese Academy of Sciences) was inoculated in BG11 nitrogen-deficient medium, and cultured at 28°C, 150r / min, light of 60000-80000lx, and light-dark cycle of 12h-12h. After 7 days, the seed solution was obtained; then the seed solution was poured into the small pond set in the greenhouse for large-scale cultivation, and the temperature in the greenhouse was kept at about 30-35°C; after 5 days of expansion cultivation, the nitrogen-fixing Anabaena could be collected.

[0031] After collection, press filter to remove most of the water in nitrogen-fixing Anabaena to obtain wet algae with a water content of 40-60%; then spread the wet algae on a tray and place it in an oven at 35°C until the water content drops to 8-10% to obtain dry algae; after cooling, crush the dry algae with a grinder; first heat the water to 70°C in a stirring pot, and then mix the crushed nitrogen-fixing anabaena with water at...

Embodiment 2

[0038] Nitrogen-fixing Anabaena 119 (provided by Wuhan Institute of Hydrobiology, Chinese Academy of Sciences) was inoculated in BG11 nitrogen-deficient medium, and cultured at 28°C, 150r / min, light of 60000-80000lx, and light-dark cycle of 12h-12h. After 7 days, the seed solution was obtained; then the seed solution was poured into the small pond set in the greenhouse for large-scale cultivation, and the temperature in the greenhouse was kept at about 30-35°C; after 5 days of expansion cultivation, the nitrogen-fixing Anabaena could be collected.

[0039] After collection, press filter to remove most of the water in nitrogen-fixing Anabaena to obtain wet algae with a water content of 40-60%; then spread the wet algae on a tray and place it in an oven at 40°C until the water content drops to 8-10% to obtain dry algae; after cooling, crush the dry algae with a grinder; first heat the water to 70°C in a stirring pot, and then mix the crushed nitrogen-fixing anabaena with water at...

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Abstract

The invention discloses an application of nitrogen-fixing blue-green algae to improvement of emergence quality of seed sweet potatoes. A seed coating substrate is prepared from extract of the nitrogen-fixing blue-green algae, each seed potato is coated with the seed coating substrate by rolling in the seed coating substrate, and finally, the seed potatoes after seed coating are discharged in a seedbed land for culture. The seed coating substrate has certain water storage performance and can release contained nitrogen-fixing blue-green algae extract gradually, so that the seed potatoes can absorb the nitrogen-fixing blue-green algae extract in a longer period of time, soil around the seed potatoes also contains the nitrogen-fixing blue-green algae extract, a growth promoting microenvironment is formed around the seed potatoes by the seed coating substrate and the surrounding soil, the nitrogen-fixing blue-green algae can act on the seed potatoes continuously to promote rapid rooting, germination and growth of the seed potatoes, and emergence rate of the seed potatoes is increased.

Description

technical field [0001] The invention belongs to the technical field of sweet potato planting, and in particular relates to the application of nitrogen-fixing cyanobacteria in improving the emergence quality of sweet potato seed potatoes. Background technique [0002] Nitrogen-fixing cyanobacteria can not only use photosynthetic pigments to use solar energy to fix carbon to synthesize carbohydrates, but also synthesize nitrogen from nitrogen to ammonia through nitrogenase. They play an important role in nitrogen balance in natural ecology. According to the biological characteristics of nitrogen-fixing cyanobacteria, it can be seen that it is a kind of natural resource with great development prospects. It has long been discovered that algae have a fertilizing effect on plants. In 1939, it was discovered that nitrogen-fixing cyanobacteria growing in rice fields can keep rice yields high year after year. John (John R B. Production of nitrogen fertilizer with nitrogen-fixing bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C1/06
CPCA01C1/06
Inventor 卢梅雅
Owner 卢梅雅
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