Method for harvesting tobacco leaves difficult in yellowing

Abstract

The invention provides a method for harvesting tobacco leaves difficult in yellowing. The method comprises the following steps: firstly early harvesting four leaves at the lower part; secondly, cultivating until four leaves at the lower-middle part are mature, and harvesting; thirdly, cultivating until four leaves at the middle part are mature, and harvesting; and fourthly, fully cultivating until six to eight leaves at the upper part are mature, and harvesting. The harvesting method provided by the invention can improve yellowing and mature degrees of the leaves at the upper and middle parts while guaranteeing that the leaves at the lower part are yellowed and mature, yellowing is sped up, a harvesting period is shortened, and quality grade of cured tobacco leaves is improved.

Description

technical field [0001] A method for harvesting hard-to-fall yellow tobacco leaves belongs to the technical field of mature harvesting of flue-cured tobacco, and particularly relates to a method for harvesting difficult-to-fall yellow tobacco leaves under special climate, variety and cultivation conditions. Background technique [0002] In recent years, due to the abnormal climate such as precipitation and uneven light distribution in the early growth stage of some tobacco fields, the supply of soil fertility is lagging, resulting in the imbalance of carbon and nitrogen nutrition metabolism of tobacco leaves, and the formation of hard-to-fall yellow tobacco leaves. Due to the different fertilizer tolerance of different varieties, the difficulty of yellowing varies. The curing characteristics of hard-to-yellow tobacco leaves are often poor, difficult to turn yellow, and easy to burn. During the production process, the hard-to-yellow tobacco leaves usually show slow yellowing ...

AI Technical Summary

Problems solved by technology

Hard-to-yellow tobacco leaves tend to have poor curing characteristics, hard to turn yellow, and easy to burn

During the production process, the hard-to-yellow tobacco leaves usually show slow yellowing and long harvesting period. Due to the influence of factors such as crop cultivation cycle and production habits, such tobacco leaf harvesters are often inaccurate in grasping the maturity and harvesting maturity. The density does not meet the technical standards, which will easily lead to the extraction of raw tobacco, which further increases the difficulty of curing, resulting in an excessive proportion of low-grade tobacco in the cured tobacco, a low proportion of high-grade tobacco, and low grade structure and quality of tobacco leaves.

Usually, the number of remaining tobacco leaves is about 18-20 pieces. The current harvesting method harvests about 2 pieces each time, and the number of harvesting is basically 6-7 times, which is not conducive to the nutritional coordination between the leaves of the tobacco leaves. As the position rises, the maturity and yellowing of tobacco leaves slow down, the identity is too thick, the structure is tight, the quality drops significantly, and the overall harvest period is longer

After the roasting production starts, farmers often harvest continuously, and the tobacco leaves do not have enough time to mature in the field, resulting in over-maturity of the lower leaves, low maturity of the middle and upper leaves, and poor industrial availability of the upper and lower leaves. In the next year, if the hard-to-fall yellow tobacco leaves are formed, the mature harvesting of tobacco leaves will become more prominent

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