The results showed that the effect of the density, phosphate and potassium fertilizer on the growth potential of the Polygonum multiflorum is no significant except leaves number.
从研究结果显示密度，磷肥、钾肥施肥量对何首乌生长潜力影响除叶片数外皆不显著。
Potassium-supplying characters and the effect of potassium fertilizer for Chao and Cinnamonsoils were studied with adsorption method, pot cultivation and field trials.
采取吸附试验、盆栽试验和田间试验方法，对潮土和褐土的供钾特性及钾肥肥效进行了研究。
Field experiment was conducted to study the effect of different supplying styles of potassium fertilizer on potassium content in flue-cured tobacco leaves and the methods to increase the content.
通过大田试验，研究了不同供钾方式对烟叶含钾量的影响及提高石灰性土壤上烤烟含钾量的可能途径。结果表明，施钾能显著提高烟叶产量，其中以粉肥结合喷优丰处理效果最好。
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