Method for supplementing selenium for tobacco in seedling period

A technology for tobacco seedlings and selenium supplementation, applied in fertilization methods, botanical equipment and methods, horticulture, etc., can solve the problems of insufficient selenium supplementation methods for tobacco leaves, complicated fertilizer production processes, difficulty in application and promotion, etc. The effect of enhanced photosynthetic capacity of leaves, wide adaptation concentration range, and suitable for popularization and application

Inactive Publication Date: 2014-09-24
湖北省烟草公司恩施州公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the selenium supplement method of the above method can increase the selenium content of agricultural products, there are problems such as complex fertilizer production process, difficult operation, high cost, etc., and it is still difficult to apply and promote, and there is no good selenium supplement method on tobacco leaves

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The application amount is calculated according to 1000 tobacco seedlings, the selenium ore is crushed, ball milled, and passed through a 100-mesh sieve to make selenium ore powder with a selenium content of not less than 180mg / kg. Mix 820g of selenium ore powder with 163g of ammonium phosphate compound fertilizer and 54g of phosphoric acid Potassium dihydrogen and 71g of potassium sulfate are fully mixed, and are applied to the seedling pond during the sowing period of tobacco seedlings. When applying, 30kg of water is added to the seedling pond and mixed evenly; Potassium sulfate is fully mixed, and it is applied to the same seedling pond at the cross stage 32 days after the tobacco seedlings are sown. When applying, add 50kg of water to the seedling pond and mix evenly. 63 days after sowing, the selenium content of tobacco seedlings was 23.80 mg / kg and 108.34 mg / kg in roots, which were 21.7 times and 83.0 times higher than those without selenium powder. Tobacco seedli...

Embodiment 2

[0027] The application amount is calculated according to 1000 tobacco seedlings, the selenium ore is crushed, ball milled, and passed through a 100-mesh sieve to make a selenium ore powder with a selenium content of not less than 180mg / kg. Mix 410g of selenium ore powder with 163g of ammonium phosphate compound fertilizer and 54g of phosphoric acid Potassium dihydrogen and 71g of potassium sulfate are fully mixed, and are applied to the seedling pond during the sowing period of tobacco seedlings. When applying, 30kg of water is added to the seedling pond and mixed evenly; Potassium sulfate is fully mixed, and is applied to the same seedling pond at the cross stage 30 days after the tobacco seedlings are sown. When applying, add 50kg of water to the seedling pond and mix evenly. 63 days after sowing the tobacco seedlings, the selenium content in the seedlings was 17.08 mg / kg and 97.77 mg / kg in the roots, which were 16.0 and 74.8 times higher than those without selenium powder. ...

Embodiment 3

[0029] The application amount is calculated according to 1000 tobacco seedlings, the selenium ore is crushed, ball milled, and passed through a 100-mesh sieve to make selenium ore powder with a selenium content of not less than 180mg / kg. Mix 205g of selenium ore powder with 163g of ammonium phosphate compound fertilizer and 54g of phosphoric acid Potassium dihydrogen and 71g of potassium sulfate are fully mixed, applied to the seedling pond during the sowing period of tobacco seedlings, and 30kg of water is added to the seedling pond during application, and mixed evenly; Potassium sulfate is fully mixed, and it is applied to the same seedling pond at the cross stage 35 days after the tobacco seedlings are sown. When applying, add 50kg of water to the seedling pond and mix evenly. The selenium content in the aboveground part of the tobacco seedlings was 9.79mg / kg, and the selenium content in the roots was 62.45mg / kg, which were 8.3 times and 47.4 times higher than those without ...

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Abstract

The invention relates to a method for supplementing selenium for tobacco in the seedling period. The method is characterized by comprising a step of adding a nitrogen-phosphorus-potassium fertilizer in a nursery pond according to the conventional seedling culture method, and also comprising the following operating steps of a) supplementing selenium for tobacco seedlings in the sowing period; and b) supplementing selenium for the tobacco seedlings in the cross-shaped period. According to the law of absorbing nitrogen, phosphorous, potassium and selenium by the tobacco seedlings, nutrients are reasonably matched, the quality of the tobacco seedlings is obviously improved, the dry weight of a root system and the root shoot ratio are obviously improved, the root activity and the photosynthetic capacity of leaves are enhanced, and the stress resistance is obviously improved. The selenium content of the overground part and the root system is increased by 8.3-21.7 times and 47.4-83.0 times respectively when the tobacco seedlings emerge, the selenium content of the tobacco is improved by 32.7-90.3 percent after the tobacco is ripe and is cured, the high-quality selenium-enriched tobacco is produced easily and conveniently and the method is suitable for promotion and application.

Description

technical field [0001] The invention relates to a method for supplementing selenium of tobacco leaves at the seedling stage. Background technique [0002] China is rich in total selenium resources, and its industrial reserves rank fourth in the world. However, due to the uneven distribution of selenium resources, 72% of my country's areas are in a selenium-deficient and low-selenium ecological environment. Among them, from the three northeastern provinces to the Yunnan-Guizhou Plateau, about 2 / 3 of the main crops contain less than 0.05mg / kg, which is an internationally recognized selenium-deficient area. In 2011, my country's tobacco planting area was 18.58 million mu, most of which were selenium-deficient in the soil of the tobacco-growing areas. Smoking is harmful to health, and increasing the selenium content of tobacco leaves can effectively reduce the content of major harmful components such as cigarette tar toxicity and free radicals, and reduce the harm of smoking to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00A01C21/00
Inventor 潘家华黄树立杨树王瑞樊俊王昌军向德恩向必坤代光照
Owner 湖北省烟草公司恩施州公司
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