The time of applying potash fertilizer to flue-cured tobacco, what is the effect of potash fertilizer spray on flue-cured tobacco?

The suitable time to apply potash fertilizer to flue-cured tobacco is in the late growth stage, which can effectively promote the full maturity of the upper leaves of flue-cured tobacco, promote material transformation and dry matter accumulation, effectively reduce harmful components and promote moderate sugar-alkali ratio. it is beneficial to improve the quality of tobacco.

I. the time of applying potash fertilizer to flue-cured tobacco

It is suitable to apply potash fertilizer in the later growth stage of flue-cured tobacco, which can effectively promote the full maturity of the upper leaves of flue-cured tobacco, promote the transformation of matter and the accumulation of dry matter, effectively reduce the harmful components and promote the moderate ratio of sugar to alkali. It is beneficial to improve the quality of tobacco.

Matters needing attention in fertilization of flue-cured tobacco

1. Balanced fertilization

Single fertilization or excessive fertilization will affect the growth of tobacco plants, generally mainly applying farm fertilizer and compound fertilizer, and then mixed with potassium fertilizer, phosphate fertilizer and other trace elements, mixed use, balanced fertilization, is conducive to promote the growth of tobacco plants.

2. Pay attention to the spacing

Fertilizer is too close to the root, the concentration is too high, it is easy to produce root rot and other fertilizer damage, and there is a "root burning" phenomenon, fertilizer is too far, the tobacco plant is difficult to absorb, generally according to the growth status of tobacco plant, 15cm from the root of tobacco plant around the hole, and then cover loose wet soil to ensure tobacco plant ventilation.

3. Take measures in accordance with the conditions of the field

Fertilization needs to be carried out according to soil conditions and tobacco field fertility, and combined with weather conditions.

4. Less quantity, more quantity

It is necessary to apply fertilizer in 2-3 times to ensure the nutrient supply of tobacco plants in each growth period, less and more, scientific fertilization.

5. Topdressing

Topdressing was carried out twice, the first time survived to a small plate after transplanting, that is, 10-15 days after transplanting, combined with intermediate tillage, weeding and fertilization, the second time, before cultivating the soil, all the fertilizers were applied, and then intermediate ploughing and weeding was carried out, and high soil cultivation was carried out in deep ditches.

Third, the distribution range of flue-cured tobacco

Flue-cured tobacco is native to South America and is cultivated in all provinces and regions in the north and south of China. Flue-cured tobacco is a very important agricultural product in China's cash crops, is the main raw material for cigarette production, and is also one of the major agricultural products exported by China. China's production of flue-cured tobacco is mainly concentrated in Yunnan, Henan, Guizhou and Shandong provinces.

Fourth, the blending method of flue-cured tobacco

1. Flue-cured tobacco originates from Virginia in the United States, so it is also known as Virginia tobacco. Generally, mature tobacco leaves are put into a roasting room with hot air pipes.

2. Then give appropriate temperature and humidity to make biochemical changes in the components of tobacco leaves, waiting for tobacco leaves to turn yellow before drying, so flue-cured tobacco, also known as fire pipe flue-cured tobacco, is the main raw material of cigarette industry.

3. There are also open-fire flue-cured tobacco abroad, which generally uses firewood to burn and directly heat the curing room to complete the blending process, so this kind of tobacco has a special smoking smell, also known as smoking, is the raw material for making snuff, chewing tobacco and so on.