求翻译：1、 据了解，国家局规定：中上等烟叶收购比例要达到90%以上，所以烟叶收购都在提级上调，综合以上原因，下低等烟叶质量很差，要完全满足日烟的质量和量很困难是什么意思？

1, it is understood, the National Bureau of states: the proportion of middle and upper leaves to the acquisition of more than 90%, so the level of tobacco put up in the acquisition, the above reasons, the next lower leaf quality is poor, to fully meet the quality and smoke on volume is very difficul

1 * , it is understood that the National Council on provisions, such as: the leafs acquisition ratio has to be more than 90 percent, and that is why leafs acquisition are mentioned on the above reasons, tobacco, such as the low quality is very poor, it is necessary to fully meet the quality and volu

1st, According to understanding, National Bureau stipulation: The superior leaf tobacco purchase proportion must achieve above 90%, therefore the leaf tobacco purchase all is promoting the upward, synthesizes above reason, gets down the low status leaf tobacco quality to be very bad, must satisfy Ja

1, it is understood that the national Office provides upper leaf tobacco purchasing ratio reached more than 90%, so the leaf tobacco purchasing are called on a promotion, the above reasons, under the low flue-cured tobacco of poor quality, is difficult to fully meet the quality and quantity of smoke