Cuttings topdressing can be carried out with water, can also be used phosphate : potassium hydrogen plus a foliar application of urea. 扦插苗追肥可结合浇水进行,也可用磷酸:氢钾(PH)加尿素进行叶面喷施。
Suitable factors of preparation of intermediate product potassium hydrogen sulfate and neutralizing reaction of potassium hydrogen sulfate with ammonia is given. 用硫酸锆、硫酸氢钾(PH)分别代替浓硫酸,催化环己醇脱水合成了环己烯,主要考察了催化剂用量、分馏反应时间对产物收率的影响。
Chemical reagent & Potassium hydrogen phthalate GB/T1291-1988化学试剂邻苯二甲酸氢钾(PH)
Acetanilide and hexane diacid, potassium hydrogen phthalate could improve PVC crystallinity. 乙酰苯胺、己二酸和邻苯二甲酸氢钾(PH)可以使PVC结晶度增大。
The low temperature dilute acid process of potassium hydrogen sulfate 硫酸氢钾(PH)低温稀酸新工艺