摘要
以常规钾肥和不施钾作对照 ,研究包膜控释钾肥对烤烟钾营养状况的影响。结果表明 :控释钾肥可以显著提高烟叶的含钾量 ,施用控释钾肥 75kgK2 O /hm2 ,15 0kgK2 O /hm2 ,2 2 5kgK2 O /hm2 的烟叶采烤后含钾量分别为2 .5 8% ,2 .96 % ,3.0 1% ,均达到了优质烟的标准。控释钾肥可使成熟期烟田近根区土壤速效钾出现富集 ,使烟叶含钾量出现升高的趋势 ,是能够提高烟叶含钾量的主要原因。
The effects of Controlled-Release Potassium Fertilizers (CRPF) on the status in nutrition of flue-cured tobacco with employing conventional potassium fertilizer and non-potassium experiment were studied. The results indicated that the content of potassium in flue-cured tobacco leaves treated with CRPF was increased as compared to common fertilizer. The K contents of flue-cured tobacco leaves treated with 75 kg K 2O /hm 2,150 kg K 2O /hm 2,225 kg K 2O /hm 2 was 2.58%,2.96%,3.01%,respectively. The reason for the K content increases in flue-cured tobacco was that CRPF increased the content of the available potassium in the rhizosphere soil and optimized the potassium nutritional condition for growth of flue-cured tobacco.
出处
《山东农业大学学报（自然科学版）》
CSCD
北大核心
2004年第2期201-204,共4页
Journal of Shandong Agricultural University：Natural Science Edition
基金
国家农业科技跨越计划项目资助
([2 0 0 1]8)
关键词
包膜控释钾肥
烤烟
钾营养
烟叶含钾量
controlled-release potassium fertilizer (CRPF),flue-cured tobacco,content of potassium
