论文部分内容阅读
世界上利用磷块岩来制造过磷酸鈣的历史到今天还只有100多年,而磷矿粉的肥效研究,則在1909年才由普里亚尼什尼柯夫院士領导在苏联开始。但是最近50年来,磷肥的产量随着化学工业的发展而迅速地增长。根据1956年国內文献上所看到的数字,世界化学磷肥的产量約为3500万吨上下(其中包括3000万吨过磷酸鈣及350万吨浓縮磷肥)。氮肥和磷肥产量比例的变化但是在整个肥料工业中,磷肥增长的数字在比例上远远的落后于氮肥。这里我們首先簡单的說明一下
The history of using phosphorite to make SSP in the world is only over 100 years ago. However, the study of fertilizer efficiency of phosphate rock was only started in 1909 by the leadership of Priyanikshnikov in the Soviet Union. However, the output of phosphate fertilizer has rapidly risen with the development of the chemical industry in the last 50 years. According to figures from domestic literature in 1956, the world production of chemical phosphate fertilizer is about 35 million tons (including 30 million tons of superphosphate and 3.5 million tons of concentrated phosphate fertilizer). Changes in Proportion of Nitrogen and Phosphate Fertilizer Production However, in the fertilizer industry as a whole, the figure for the increase in phosphate fertilizer lags far behind that of nitrogen fertilizer in proportion. Here we first briefly explain