The local varieties of shandong mulberry have high leaf yield in spring, better leaf quality, strong adversity resistance and extensive adaptability.
山东桑树地方品种春季产叶量高，叶质较好，抗逆性强，适应性较广。
Consummating the tobacco leaf quality indemnificatory mechanism.
完善烟叶质量保障机制。
It has been a limiting factor to improve tobacco leaf quality because of high starch content.
淀粉含量高成为制约我国烤烟质量提高的一个限制因素。
The utilization of the fine tobacco varieties plays a major role in ensuring the tobacco leaf quality.
而优良品种的使用是保证烟叶质量的首要条件。
The research indicated that application of oil-cake fermented could promote the growth of flue-cured tobacco plant, enhance leaf yield, improve leaf quality.
实验表明，施用发酵性饼肥，可促进烟株生长发育，提高烟叶产量，改善烟叶质量和增加上等烟比例。
With the buried glass filter paper bag method a field experiment was carried out in a tobacco field to study mineralization of green manure and its effect on tobacco leaf quality.
在田间条件下利用埋设玻璃滤纸包法研究了绿肥翻压后的分解规律及其翻压绿肥对烟叶品质的影响。
To achieve better planning of tobacco production in southwestern Gnizhou, authors monitored the tobacco leaf quality for several years, and conducted leaf quality regional planning.
为了进行更合理的烟叶生产布局，对黔西南州烟叶品质进行了多年的监测，并对烟叶品质进行了区划。
It was very important for the improvement of the cured tobacco leaf quality to study deeply the regularity of the physiological and biochemical change in tobacco leaf during the curing process.
深入研究和全面了解烟叶在烘烤过程的生理生化变化规律，对提高烤烟的品质具有极其重要的作用。
It was very important for the improvement of the cured tobacco leaf quality to study deeply the regularity of the physiological and biochemical change in tobacco leaf during the curing process.
深入研究和全面了解烟叶在烘烤过程的生理生化变化规律，对提高烤烟的品质具有极其重要的作用。
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