摘要
土壤中速效钾含量逐年下降、施肥的氮磷钾比例不协调、种烟的不同茬口土壤的速效氮量不同及旺长期烟株生长迅速是造成捆株缺钾的原因。今后烤烟生产应增施钾肥、喷施磷酸二氢钾或硫酸钾。
The reasons of potassium dificiency of tabacco plant on large area planted tabacco were investigated and analysed from the last ten days of May to the first ten days of Jue (1995) in Guozhen Country. The main teasons was that the available potassiurn content in the soil planed tobacco was reducing year by year, the rate of the application of N, P, K fertilizers was unbalance, the different of the available nitrogen of for ratation soil and the quick growth of tabacco plant at vigorous period. The tabacco production if future app1ying more potassium fernlizer, spraying KH2PO4or K2SO4.
关键词
烟草
缺钾
原因
调查
Flue-cured tabacco reason of potassium deficiency investigation
