我们在布哈奇地区卡林宁纳集体农庄进行了四年以微量元素的溶液在播种前浸烟草种子,观察其提高对秧苗期茎腐和黑根腐以及对霜霉病的抵抗力的研究。试验地是黑灰的灰化性土壤,PH5.8,水解酸度为1.6毫克当量,吸收性碱总量为21.5毫克当量/100克土壤,碱饱和度93％,可耕层腐植质含量3.7％。活动型磷12毫克/100克、钾10.5毫克/100克,可水解氮8毫克/100克,活动型锌0.15～0.6毫克/公斤干土,铜2.3毫克/公斤干土。烟草的品种是2747,于温床播种前4天用0.2％硫酸锌、硫酸铜、碘化钾的单纯溶液或混合溶液浸24小时,以 We conducted a four-year solution of trace elements in the Karlinina Collective Farm in the Bukhara area to soak tobacco seeds before sowing, and to observe their resistance to stalk rot and black root rot at seedling stage and to downy mildew . The test was black-ash ashed soil, pH 5.8, hydrolysing acidity 1.6 mg equivalent, total amount of absorptive alkali 21.5 meq / 100 g soil, alkali saturation 93%, arable soil humus content 3.7% . Active phosphorus 12 mg / 100 g, potassium 10.5 mg / 100 g, hydrolysable nitrogen 8 mg / 100 g, active zinc 0.15 ~ 0.6 mg / kg dry soil, copper 2.3 mg / kg dry soil. Tobacco varieties are 2747, 4 days before planting in the hotbed with 0.2% zinc sulfate, copper sulfate, potassium iodide solution or a simple mixed solution for 24 hours to