Influences Of Remained Leaves Micro-ecological Environment And Quality Of Flue-cured Tobacco In Chongqing

In 2013, in a small factory of Pengshui County in rural technology demonstration park were studied after topping remained leaves of flue-cured tobacco leaves during growth and development of agronomic traits, changes of biological characteristics of micro-ecological environment, photosynthetic characteristics and the impact of tobacco quality. In this study, the local variety of "Yunyan 97" was materials. The results was followed: 1. The study of agronomic characteristicsWith the increase of the number of leaves left, middle and upper leaves of leaf area, leaf length and leaf width had decreased, leaving the number of tobacco leaves change, the upper leaf area, leaf length and leaf width have an impact by reducing the Remained Leaves can effectively improve the middle and upper leaf area, leaf length and leaf width size. Which remained leaf number 20 leaves its leaf area, leaf length and leaf width is more appropriate.The number of remaining leaves too much or too little, have a great influence on the light transmittance; the temperature number of leaves left on each leaf-bit processing with the decrease upward trend; while the same location, temperature increases remained leaf number of upward trend, the number of suitable leaving various parts of the leaves of tobacco plants can avoid the temperature difference is too large; the more the stay the greater the number of leaf tobacco overall humidity. With parts of the lower humidity significantly increased; the remained leaves too much or too little, the lower portion of higher CO2 concentrations. The different treatment remained leaves too much or too little will reduce the CO2 concentration; the left leaves a few more, as part of the down, the greater the wind speed declines. Overall, the number of leaves left 20 micro-ecological environment leaves more appropriate treatment.Number five remain under flue-cured tobacco leaf processing Pn showed a single peak, peak at 12:00, no "midday depression" phenomenon. Five remained leaf number under the influence of the main physiological factors Pn of flue-cured tobacco is Gs, ecological factors are PAR. But in a different ecological groups, the influence of flue-cured tobacco Pn secondary ecological factors are different. The test results showed that treatment of different leaves, the remained leaves number 20 leaves of Pn maximum photosynthetic ability. To 20 leaves per treatment group structure is more reasonable.The area, adequate light, abundant rainfall, favorable for tobacco growing in Chongqing, forming high sugar content in the leaves, a higher quality of tobacco leaves; total nitrogen content increases there is a tendency to reduce the number of leaves left, and the nicotine content and potassium content increased increase the number of leaves left after the first increased and then decreased; no significant difference in chloride ion content; Cl ratio of potassium increases remained leaf number showing an upward trend. Overall, the number of leaves left for the chemical composition of 20 process is more coordinated.The impact of changes in the number of leaves left on the neutral middle and upper leaves leaves aroma components larger less impact on the lower leaves.The impact of changes in the number of leaves left on the sensory quality of tobacco leaf in the middle and upper leaves large, and less impact on the lower leaves. The upper leaves overall sensory quality is better, remained leaf number 20 leaves processing momentum medium, gas concentration stronger aroma than the suspended state, aroma quality is still good, a slight aroma, yet thoroughly through the hair of the hair, earth smell of fish, Kujiao gas and green miscellaneous gas is high, low irritant, smoke still delicate, slightly softer, more rounded, there is irritation, dryness, aftertaste slightly net a little comfort.The more remained leaf number and value of higher yield, but the average price decreased, fine tobacco smoke rate and upper rate decreased. Number of Leaves of 20 leaves processing, both to meet the needs of the cigarette industry, but also to guarantee the income of farmers.