选择27个田块进行了小麦精确施氯试验研究.结果表明:精确施氮区产量最高,达6 750 kg/hm2,常规施肥区次之,达6 735kg/hm2,无氮区产量最低,仅4 050 kg/hm2.

A series of technological transformations of S-based compound fertilizer plant are carried out for the quality improvement and cost reduction in Ruihe Fertilizer Co.,Ltd.The converter is reformed to increase the KCl conversion rate;use the KCl made in China instead of the imported to reduce the cost;take the measures of filling nitrogen and increasing potassium to improve the N content and produce the multi-standards compound fertilizer;increase the phosphoric acid washing device to improve the phosphoric acid quality and the product water soluble rate;implement DCS control to optimize operation indexes of conversion and ammoniation.The next step will be the transformations of dry and cooling section for increasing production capacity and development of new fertilizers such as nitro slow release fertilizer.

<正>硫基复合肥是目前化肥市场上主推的高氮、硫基、高塔、控释等高浓度复合肥中重要品种之一。国内硫基复合肥生产装置大部分采用氯化钾低温转化料浆转鼓氨化喷浆造粒工艺技术。自1993年山东红日自主开发该项技术并获得国家发明金奖以来,短短十几年