什邡晒烟种植历史悠久,常年种植面积8—9万亩,年产量25万担左右,总产值2000多万元,每年为国家提供税金近1000万元,是我县农民与地方财政收入的一项重要来源。在晒烟生产中。由于移栽后常遇到低温倒春寒的袭击,烟苗初期生长缓慢,至5月上、中旬病害流行季节,烟苗对低温多雨与病害的抵抗力弱,往往造成大幅度减产降质,重灾年份减产30—50%。此外,烟草的后作多为水稻,遇春季低 Shiyang sun tobacco cultivation has a long history of perennial planting area of ​​8-9 mu, annual output of about 250,000, the total output value of more than 2000 million, providing nearly 10 million yuan of tax each year for the country’s farmers and local financial revenue of a Key sources. In the sun-cured tobacco production. Due to the low temperature after transplanting often encounter the late spring cold attack, the initial growth of tobacco seedlings slow to May on the mid-season epidemic season, tobacco seedlings of low temperature and rainy and disease resistance is weak, often resulting in a significant reduction in production and quality, heavy disaster Year cut 30-50%. In addition, the majority of tobacco after the rice, in case of low spring