Tobacco selenium-enriching and potassium-extracting leaf fertilizer and preparation method thereof

Abstract

The invention provides tobacco selenium-enriching and potassium-extracting leaf fertilizer and a preparation method thereof. The selenium-enriching and potassium-extracting leaf fertilizer is prepared by mixing and dissolving sodium selenite, potassium sulfate, amino acid and potassium hydroxide into water. Each liter of selenium-enriching and potassium-extracting leaf fertilizer is prepared from 20-40 mg of sodium selenite, 5-10 g of potassium sulfate, 20-30 mg of L-amino acid, 15-25 mg of L-aspartic acid, 5-10 mg of potassium hydroxide and the balance water. The selenium-enriching and potassium-extracting leaf fertilizer is sprayed on tobacco leaves uniformly when buds come out of tobacco plants, the amount used in each mu is 50 liters, and spraying is carried out once. In the bud coming process, the selenium-enriching and potassium-extracting leaf fertilizer is adopted for being sprayed to increase absorption accumulation of the tobacco leaves to selenium and potassium, and the purpose of producing selenium-rich and high-potassium tobacco leaves is achieved. Compared with the prior art, the selenium content and the potassium content in the tobacco leaves are effectively controlled, and the leaf fertilizer has the advantages of being simple in method, remarkable in effect and safe to use.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and more specifically relates to a tobacco leaf selenium-enriched potassium-extracting foliar fertilizer and a preparation method thereof. Background technique [0002] Tobacco is a foliar economic crop that requires a high amount of potassium, and potassium is one of the important indicators to measure the quality of tobacco leaves (Zhao et al., FieldCropsRes, 116:86-91, 2010; Guo Qingyuan et al., China Tobacco Science, 36(1):61 -67, 2015). Generally, higher potassium helps to improve the color and identity of tobacco leaves, and improves the aroma, aroma and combustibility of tobacco leaves. The potassium content of tobacco leaves is related to the safety of tobacco products (Ma Chaowen, Crop Research, (2): 190 -193, 2006). The potassium content of tobacco leaves in the United States and Zimbabwe is mostly 40-60g / kg, while the potassium content of tobacco leaves in my country is generally...

AI Technical Summary

Problems solved by technology

However, at present, there are very few studies on increasing the selenium and potassium content of tobacco leaves at the same time, and there is also a lack of effective methods for enriching selenium and potassium in tobacco leaves.

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