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三年来在云南的蒙自、开远、玉溪、昭通、嵩明、鲁甸、曲靖、云南农大、楚雄、威信等地进行了中微肥在山地烟上的施用试验,示范推广面积1万多亩,单产280～350公斤,中上等烟比例达80～90％,上等烟比例明显提高,烟叶品质有所改善,为进一步发展山地烟生产提供了科学依据。山地烟课题组在全省十余个点不同红壤、黄壤和紫色土壤上,在烤烟团棵期和旺长期分别喷施:1.0％的硫酸镁溶液;0.2％硫酸锌溶液;0.2％的硼砂溶液;0.2％硫酸锰溶液;1.0％的硫酸镁加0.2％的硼砂混合液;以喷清水为对照进行试验,结果如下。
Over the past three years in Yunnan Mengzi, Kaiyuan, Yuxi, Zhaotong, Songming, Ludian, Qujing, Yunnan Agricultural University, Chuxiong, Viagra and other places in the application of trace fertilizers on the mountain smoke test, demonstration and promotion of an area of more than 10,000 Mu, yield 280-350 kg, the proportion of middle and upper class smoke is 80-90%, the proportion of superior tobacco is obviously improved, the quality of tobacco leaves is improved, which provides a scientific basis for the further development of mountain tobacco production. Mountain tobacco group in the province more than ten points on different red soil, yellow soil and purple soil, the tobacco plants in the flowering period and Wang Long period were sprayed: 1.0% magnesium sulfate solution; 0.2% zinc sulfate solution; 0.2% borax solution ; 0.2% manganese sulfate solution; 1.0% magnesium sulfate plus 0.2% borax mixture; sprayed water as a control test, the results are as follows.