First, take the lower leaves as early as possible. The picking standards for the lower leaves of flue-cured tobacco should be based on the fact that the leaves turn from green to yellow and cannot wait until the leaves turn yellow. When the lower leaves are picked too late, one will consume more nutrients and reduce the yield and quality of tobacco leaves. Second, it will cause poor ventilation and light transmission in the tobacco fields, affect the growth and maturity of the middle leaves, and will delay the time for picking and baking the middle leaves. Thinning leaves, yield and quality. Appropriately early picking time of the lower leaves will be baked and baked, and the quality of the middle leaves will be improved. According to relevant statistical experiments, it can increase the production of tobacco leaves by about 5 kilograms per acre. Therefore, early harvesting of the lower leaves is an effective measure to improve tobacco quality and tobacco farmers' income.
Second, scientific management of water. The maturity of tobacco leaf is very sensitive to the demand of water, especially in arid regions. Generally, the ridges in the tobacco field should be kept moist or have a little water at any time. When the ditch is dry, it is necessary to divert water in a timely manner so that the soil can maintain a suitable moisture content. Especially in the mature period of the upper leaves, in the event of high temperature and drought, the lack of water in the fields will inevitably lead to difficult baking of the tobacco leaves. The cured tobacco leaves will be stiff, dusty, and variegated, which will seriously degrade quality and affect efficiency. The water in the plots must be drained in a timely manner. Excessive water in the plots will cause the leaves to be cooked. At this time, the harvesting and baking will also affect the yield and quality of flue-cured tobacco. Therefore, it is necessary to strengthen the water management at this time.
Third, improve baking quality. The tobacco leaf baking is not only to yellow the tobacco leaf, but also to have a good degree of appropriateness. Finally, the tobacco leaf is roasted yellow and roasted, which is essentially a complex physical and chemical process of material transformation inside the tobacco leaf. In the early period of baking, it is necessary to control the yellowing of the tobacco slowly in the low-temperature environment, and dehydration on the edge of the yellow side to achieve soft yellowing. In the medium-term, the temperature should be steadily raised, and the temperature must not fall, so as to ensure that there is no green vein and no steaming, and the yellowing period is obtained. The good quality is fixed down; the late temperature should not be too high, generally should be below 68 °C, to avoid red, and to minimize the loss of tobacco leaf aroma.
Fourth, carefully tie up. According to the viewpoints and requirements for the purchase of flue-cured tobacco that can only be as low as high-grade and high-grade tobacco leaves of high-grade and high-grade tobacco leaves of tobacco plants, and that they do not need high-half-grade tobacco with poor purity, tobacco farmers should strive to avoid Mixing grades and handles not only guarantees the stability of tobacco quality, but also does not cause economic losses. In order to ensure the consistency of the bar, it is best to roast a kiln to choose a kiln, select each piece of tobacco, and finally tie the bundles according to the level, to achieve higher prices and better quality, increase the economic benefits of growing tobacco.
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