提高云南烤烟含钾量技术措施研究
Agrotechnical Measures of Raising Tobacco Leaf Potassium Content in Yunnan
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摘要: 针对云南烤烟含钾量较低的主要原因及其它方面原因,进行了提高烟叶含钾量农业综合技术措施的多点大田比较试验以及农业综合技术措施配合辅助技术措施的小区试验。结果表明:农业综合技术措施使多数供试点的烟叶含钾量超过或接近于3%。江川点在农业综合措施基础上,配合3个辅助措施对提高烟叶含钾量的影响均达到显著水平,烟叶含钾量均超过3.57%;昭通点仅一项辅助措施对提高烟叶含钾量效果显著,但处理及对照的烟叶含钾量均较低。研究认为,在农业综合措施的基础上,配合某些辅助措施,可以使云南中、低海拔烟区的烟叶含钾量提高到3%以上。但是,在海拔高、气候冷凉的烟区,烟叶含钾量的提高仍然是一个需要进一步研究和解决的问题。Abstract: Field experiments in five location and plots with comprehensive agrotechnical measures plus auxiliary measures were conducted to study the raising of leaf potassium content.Results indicated that the potassium content of tobacco leaf was raised near or over 3% in Jiangchuan, treatments with 3 auxiliary measures significantly raised the leaf potassium content over 3.57%, while in Zhaotong, only one auxiliary measures got this effect, where both the treatments and check had a low leaf potassium contents.So in tobacco areas with higher elevation and colder climate, the raising of leaf potassium content is still a problem.
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