论文部分内容阅读
为深入了解黔西南州烤烟钾含量状况,研究了其烟叶钾含量分布特征及影响因素。结果表明,黔西南州烟叶钾含量变幅在0.82%~2.58%,平均值为1.77%,偏低;贞丰县、兴仁县烤烟钾含量极显著高于晴隆县;烤烟钾含量空间分布有从中部烟区分别向北和南两个方向递减的趋势。不同品种间烤烟钾含量差异达显著水平,云烟87品种的钾含量显著高于云烟97;烤烟钾含量有随着土壤粘粒含量升高而增加的趋势;随植烟土壤有机质含量升高,烟叶钾含量有降低的趋势;土壤p H在5.0~6.5或7.5以上,随植烟土壤p H升高,烟叶钾含量有升高的趋势;土壤p H在6.5~7.5或5.0以下,随植烟土壤p H升高,烟叶钾含量有降低的趋势。
In order to further understand the status of potassium content in flue-cured tobacco in Qianxinan Prefecture, the distribution and influencing factors of potassium content in flue-cured tobacco were studied. The results showed that the potassium content of tobacco leaves in Qianxinan Prefecture varied from 0.82% to 2.58% with an average of 1.77%, which was low. The potassium content of flue-cured tobacco in Zhenfeng County and Xingren County was significantly higher than that in Qinglong County. From the middle of the tobacco area respectively, north and south direction of decreasing trend. The content of potassium in different cultivars reached a significant level, and the content of potassium in Yunyan 87 was significantly higher than that in Yunyan 97. The content of potassium in flue-cured tobacco increased with the increase of soil clay content. With the increase of soil organic matter content in tobacco, Potassium content decreased. Soil p H ranged from 5.0 to 6.5 or above 7.5. With the increase of p H in tobacco soil, the potassium content of tobacco leaf tended to increase. The soil p H ranged from 6.5 to 7.5 or below 5.0. Soil p H increased, leaf potassium content decreased.