"This was released on Monday last week, and it is no different from the previous ones, and the original product tested is the last batch of phosphate fertilizer produced." Shan Jianping walked over and put the report on the desk: "You can read it if you want." ”

When it comes to specific professional issues, Shan Jianping is normal, and he is not as stunned as he was at other times.

Zhong Bai nodded in thanks, and without saying anything, he directly opened the test report and began to read it.

Unlike the mainstream phosphate fertilizers that came decades later, the main component of this "Shanping" phosphate fertilizer is superphosphate, rather than high-concentration phosphate fertilizers such as ammonium phosphate and heavy superphosphate.

This is due to the fact that China's current technology and equipment are not up to the conditions for the production of high-concentration phosphate fertilizers, and only a few large factories in the country can produce them, and other fertilizer plants at the provincial level and below are basically producing superphosphate, not to mention the Shanping County fertilizer plant.

After a careful browsing, the content of phosphorus pentoxide is within the average level, and there is nothing else to see from this, it is just a very decent chemical product test report.

"How, what do you see?" Shan Jianping also wanted to take this opportunity to find out Zhong Bai's specific ability, whether he was a Zhao Kuo who talked on paper, or a really capable genius.

"The report is very ordinary, and you can't see anything from that alone." Zhong Bai replied lightly.

Shan Jianping was a little disappointed, although there is nothing to find fault with this answer, but it is estimated that any chemical secondary school student can make this answer, so why do I need this technical school student?

"However......" Zhong Bai paused and said: "I noticed that the trace element content measurement in the report is very different, so the credibility of this report is not too high, and it is necessary to look at the entire production process to investigate the reason." ”

"Trace element measurements are skewed? Why do you say that? Shan Jianping immediately frowned and asked.

Based on this report alone, I think it's pretty standard.

Zhong Baixin said that the 81-year test report of course he could see at a glance that the deviation value of trace elements was very powerful, and the laboratory equipment of this year was no different from the level of primary school students in his opinion.

However, Zhong Bai still pointed to a data at random and said: "For example, here, the deviation value of free phosphoric acid is only one decimal place, and the fluctuation area is also between 0.1-0.5mg, which is too big an absolute value compared with the international standard deviation." ”

Shan Jianping immediately retorted: "Don't talk about any international standard deviation, we are a county fertilizer factory, the laboratory is equipped according to the county-level standards, and the test results are like that, how can we compare with foreign countries?" ”

He suddenly reacted again, and said seriously: "You saw it mentioned in the book when you were studying in school, Xiao Zhong, we are a small fertilizer factory at the grassroots level, and it is normal for there to be a gap in the conditions." Moreover, even if the deviation value is large, it is within the normal range, which does not affect the use effect of phosphate fertilizer, and has nothing to do with the decline of fertility. ”

It seems that this single section chief still has some ability, but Zhong Bai didn't break it, but just explained in detail from a different angle: "Not necessarily." The test value of free phosphoric acid is not taken to two decimal places, in case the rounding happens to be stuck on the edge, there are too many free phosphoric acid components, resulting in insufficient fertility concentration, so that in actual use, it is also very likely to have the problem of fertility decline. Of course, I'm just giving an example, and it's not necessarily that this report will be exactly like that. ”

Hearing this detailed explanation, Shan Jianping was stunned.

The effect of too much free phosphoric acid on the fertility of phosphate fertilizer seems to have been studied, right?

Why does this kid not only speak as if he is very reasonable, but also in such a firm tone?

"No, Xiao Zhong, which department or authority said that free phosphoric acid may produce a decrease in fertility? You're not going to open your mouth, are you? Shan Jianping immediately asked.

Only then did Zhong Bai realize that he had just said that the most authoritative research literature on the effect of free phosphoric acid on phosphorus fertility was researched and clearly expounded by a West German scholar in 1986, accompanied by a year-long practical application analysis report.

It is only 1981 now, and this issue is naturally inconclusive, even if the name of this scholar and the name of the analysis report are told to Shan Jianping, he will definitely not be able to find out.

So he could only cough lightly and said casually: "Ahem, uh...... This was said by a scholar when he came to our school to give a report, and it is still in the research stage, and no official report has been released. ”

"The province? Or is it from the ministry? What is your name? Shan Jianping obviously bit it and didn't let go.

"This ...... I really don't remember clearly, there were too many people that afternoon, and I just happened to listen to it halfway through. Zhong Bai had no choice but to be sloppy.

"Then you have a good memory, remember the name of the scholar and tell me it!" Shan Jianping felt that he had grasped a possible reason, so he immediately said excitedly: "I graduated from the National University of Chemical Technology, and our teacher also knows many domestic scholars, as long as you ask, I have a way to get in touch!" At least with theoretical support, if it can be determined that there is too much free phosphoric acid, then the problem can be solved! ”

Graduated from the National University of Chemical Technology?

Although this school is not at the same level as Zhong Bai's alma mater, Huaqing University, the pure chemical engineering major is also very high in China, the level is not bad, and it is now in 1981......

Could it be that this section chief Shan Jianping is a full-fledged university graduate in the 60s?

That's pretty rare!

After the resumption of the college entrance examination at the end of the 70s, there were many more people admitted to college, but whether it was the previous decade or the earlier 60s, college students at that time were really similar to pandas, and gold was expensive!

Moreover, such college graduates majoring in chemical engineering are basically concentrated in large enterprises, research institutions and scientific research departments at all levels, and it is almost impossible to work in a small county-level fertilizer factory.

Seeing Shan Jianping's excitement as if he had found a life-saving straw, Zhong Bai had no choice but to remind: "Section Chief Shan, this is just a possible reason, and it can't be determined, and it may really be because of the big deviation caused by the failure of the experimental equipment, in fact, the free phosphoric acid composition is within the normal range, so let's not dwell on this issue first......

"Mm-hmm, I understand that." Shan Jianping nodded excitedly: "It's just that you can find potential possibilities from just reading a report, this ability ...... I don't think even the senior brothers in our class who specialize in report analysis theory may not be able to reach your level. ”

"How can you say that you are so powerful, I am a blind cat and a dead mouse, lucky. I happened to listen to the scholar's report that day, and among the examples he gave were excerpts from an analysis report in a few slides, and I looked at the report and said it casually. Zhong Bai didn't want to expose the basic knowledge that these theories belonged to every undergraduate student in his previous life, so he had to find a reason for it.

"Well, that's right. I've heard that scholars nowadays are more and more fond of using slides to show examples when they give lectures. In those days, not to mention examples, we didn't even see many situations, and the teachers of 20 years ago may not know more than the ordinary staff of our technical department. Shan Jianping, who recalled the memory, immediately nodded yes.

Hearing the other party mention the ordinary personnel of the technical department, Zhong Bai remembered the question just now, and asked casually: "Section Chief Shan, our technical department only has one office, are you a section chief?" ”