Study on dissolved law of potassium in potassium-calcium fertilizer;
钾钙肥中氧化钾的溶出规律研究
Determination of available silicon in potassium-calcium fertilizer by spectrophotometric method;
分光光度法测定钾钙肥中有效硅
Study of dissolving condition of silicon in potassium-calcium fertilizer by the uniform design;
利用均匀设计法研究钾钙肥中硅的溶出条件
The changes of the potassium content,calcium content ratio of potassium to calcium value of different leaf position in flue-cured tobacco green leaves during the field growth process were studied.
结果表明:在烤烟田间叶片生长发育过程中,随着烟叶部位的上升,叶片钾/钙值表现为逐渐增加的变化规律,而叶片钾和钙的含量均表现为逐渐下降的变化规律。