CAJ | 학술논문

采用农艺技术措施提高烤烟钾素含量是提高烤烟烟叶品质和产值的重要途径。通过缓释钾肥钾养分释放试验及大田肥效试验，研究了包膜硝酸钾、腐殖酸氯化钾、包膜腐殖酸氯化钾等缓释肥料的钾营养释放特征，以及对烤烟钾含量和产量、产值的影响。结果表明，标准条件下，上述3种缓释钾肥28 d钾养分累积释放率分别为67.2%、100%和87.5%，缓释能力以包膜硝酸钾肥最好。与常规钾肥相比，大田缓释钾肥处理的土壤速效钾含量在烤烟生长后期并未降低且有增加趋势，施用缓释钾肥提高烟叶钾含量13%～39%，烤烟产量6%～32%，产值7%～32%。缓释钾肥对提高烤烟钾含量及产量产值有重要作用，可以在生产上推广应用。
채용농예기술조시제고고연갑소함량시제고고연연협품질화산치적중요도경。통과완석갑비갑양분석방시험급대전비효시험，연구료포막초산갑、부식산록화갑、포막부식산록화갑등완석비료적갑영양석방특정，이급대고연갑함량화산량、산치적영향。결과표명，표준조건하，상술3충완석갑비28 d갑양분루적석방솔분별위67.2%、100%화87.5%，완석능력이포막초산갑비최호。여상규갑비상비，대전완석갑비처리적토양속효갑함량재고연생장후기병미강저차유증가추세，시용완석갑비제고연협갑함량13%～39%，고연산량6%～32%，산치7%～32%。완석갑비대제고고연갑함량급산양산치유중요작용，가이재생산상추엄응용。
Agronomic measures can be adapted to increase plant K content, which is one of important strategies to improve the quality and output value of flue-cured tobacco. Experiments on K release and field crop response of slowly-released K fertilizers, i.e., PV Coated potassium nitrate, Humic matter coated potassium chloride, and PV and humic coated potassium chloride, were conducted to investigate the K release characteristics and their effects on yield and output value of tobacco. The results showed that the accumulative solubility rates of K of three slowly-released K fertilizers in 28 days under standard conditions were 67.2%, 100%and 87.5%, respectively, of which the performance of PV coated potassium nitrate was the best. The content of soil available K increased at late growth stage of plant treated with the slowly released fertilizers. Compared with the control (common K fertilizer), application of slowly-released potassium increased leaf K content by 13%-39%, yield by 7%-32%, and production value by 7%-32%. In conclusion, the slowly-released potassium fertilizers tested have positive effects on increasing K content and output value of tobacco, and has high potential in tobacco production.