论文部分内容阅读
河西灌区土壤缺氮,磷不足,但钾丰富。种植需肥较多的烤烟,增施适量氮磷肥可提高产量和质量。盆栽试验表明,单施氮肥较对照增产77.2%;在氮基础上增施磷或钾对产量影响不大,却可提高品质。在氮磷基础上再增施钾肥,对产质均无显著影响。饼肥是种植烤烟的优质传统肥料,田间试验表明,施用氮磷和氮磷钾肥较饼肥增产10.1～13.7%,但经品质分析和评吸鉴定,烟叶品质略有降低。
Soil in Hexi Irrigation Area is deficient in nitrogen and phosphorus but rich in potassium. Planting more fertilizer to be flue-cured tobacco, increase the amount of nitrogen and phosphorus fertilizer can improve yield and quality. Pot experiments showed that single application of nitrogen fertilizer increased 77.2% compared with the control; on the basis of nitrogen added phosphorus or potassium little effect on yield, but can improve quality. In the nitrogen and phosphorus based on the additional potassium, no significant impact on the quality. Cake fertilizer is a high quality traditional fertilizer for planting flue-cured tobacco. Field experiments showed that the application of nitrogen, phosphorus and nitrogen, phosphorus, potassium fertilizer increased 10.1 ~ 13.7% compared with cake, but the quality of tobacco was slightly lower after quality analysis and appraisal.