Go back to three months ago.

After the Lantern Festival, His Majesty announced Fu Yuanzhi and Song Yi into the palace, and when Fu Yuanzhi came back, he and Song Yi studied the issue of increasing production.

Song Huan listened from the sidelines and pondered all night. It happened that the next day was Xiu Mu, and after eating the morning food, Song Huan sat directly opposite Fu Yuanzhi and said softly: "What about worrying?" ”

Fu Yuanzhi stopped writing, looked up at Song Huan, after the two pairs of eyes looked at each other for three breaths, Fu Yuanzhi put down the pen, put his hands flat on the table, tilted his head to Song Huan unconsciously, hooked his lips and said: "Seeing the appearance of the lady, can you help her husband solve her doubts?" ”

Song Huan couldn't stand it when he saw this sudden ambiguous atmosphere, so he leaned back strategically, raised his fist and broke out a white finger, poked Fu Yuanzhi's cheek, and said, "Just talk, why are you talking?" Sit, sit upright. ”

Fu Yuanzhi couldn't help but smile, pretended to look at himself and then at Song Huan in confusion, and asked blankly, "What's the matter, isn't this good?" ”

Song Huan: "......"

Song Huan cleared her throat and pursed her lips, she saw Fu Yuan's smug look, and stepped forward directly, and the noses of the two people were less than a finger away.

Song Huan's very sloppy gaze slowly looked down from Fu Yuanzhi's forehead until it paused on his lips, Song Huan swallowed his saliva and took a sip directly.

Fu Yuanzhi's eyelids drooped slightly, although his face was silent, but the slightly held hands revealed his nervousness at this time.

It's just that Song Huan didn't intend to let Fu Yuanzhi continue to calm down, after kissing, his hand was directly attached, his hand first touched Fu Yuanzhi's palm, and then his index finger and middle finger were quickly placed on his pulse.

Song Huan let out a voice in surprise.

Fu Yuanzhi also came back to his senses at this time and withdrew his hand.

Song Huan was proud and said, "And, you still want to win me!" ”

Fu Yuanzhi: "......"

Song Huan saw that Fu Yuanzhi didn't speak, so he moved the other things on the table, took Fu Yuanzhi's paper over, and spread it out with both hands.

Song Huan said: "I'll tell you seriously, although you will slowly explore it yourself, it is estimated that you will waste a lot of time." Too many people can't afford to wait, I can help a little bit, and you can save a little time. ”

When Fu Yuanzhi heard this, the mess in his mind disappeared instantly, and he said with a straight face: "Okay, Mrs. said, listen for your husband." ”

Song Huan took out his special charcoal from the other side, and looked at the brush.

Snort, the brush will only affect the speed of her shots.

Song Huan listed a few words one by one.

Fu Yuanzhi already had a good idea of her bottom line, and Song Huan didn't bother to pretend any more, she said while writing: "First of all, let's conduct a control experiment first, divided into an experimental group and a control group. ”

After writing down the four words of controlled experiment, Fu Yuanzhi was puzzled: "What is, controlled experiment?" ”

Song Huan paused for a moment, trying to explain the meaning of the controlled experiment in his mind: "Actually, the harvest of crops will be affected by many factors, such as light, soil moisture, fertility, seedlings, etc., but which of these factors can increase the yield of wheat." Controlled experiments are used to prove the exact influence of one of these factors on the experimental results. ”

Fu Yuanzhi digested it for a moment, although he still didn't understand, but he wrote down these words, and then slowly understood, he said, "Go on." ”

Song Huan thought that he should be able to understand a thing or two when he explained the controlled experiment later, so Song Huan was no longer entangled, and continued: "I listened to your conversation with Uncle Gao before, seedlings are a way to increase yield, but when is the best time period? Is it possible to compare? ”

Song Huan drew circles on the paper one by one, pointed to one of them, and said as he wrote: "Suppose you use the method taught by Uncle Gao for this piece of land, and you can divide the seedlings into different seedling methods for the other plots." ”

"We divide them into several codenames, No. 1, which is Uncle Gao's seedling method, and we can use our own guesses when we wait for a few numbers."

"Assuming that there are 400 plants in No. 1, and the row spacing * hole spacing is 2*1 (ruler), then the second number is divided into 2*1.5 (ruler), the third number is 2*2 (ruler), and so on. When all other factors remain the same, only the row spacing and the hole spacing are changed, you can figure out which one is the most suitable distance for the growth of caram. ”

"Of course, this may be limited to the capital, and it may be different in Danyang County, Yangjiang Mansion and other different places."

Fu Yuanzhi looked at the picture drawn by Song Huan, combined with what Song Huan said, and understood seven or eight points.

"So, when you say contrast, you mean contrast."

Song Huan nodded and said with a smile: "That's right, that's what it means, but you have to pay attention to the fact that this condition can only change the row spacing and acupoint spacing, and other factors cannot be changed, as long as there is a change in fertility, terrain, soil, light, etc., your experiment will not be considered successful." ”

Fu Yuanzhi nodded, "Understood." ”

Fu Yuanzhi pulled out the paper that Song Huan had already drawn "messy", and after carefully placing it, he took out a clean piece of paper and spread it out, and said, "Go on." ”

Song Huan raised his eyebrows, his eyes full of sighs.

It is worthy of being a scholar......

After Song Huan was pulled back to his senses by Fu Yuanzhi, he continued: "After deriving the best way to get the acupoint spacing and line spacing, we can try to change other factors." ”

"For example, only one seedling per hole is left, because it is evenly distributed, and various factors can be used more fully in the early growth stage (before tasseling), so it usually grows into a thicker stem, but when the wheat grows strong, will it really increase the yield?"

After Song Huan asked this question, he finally said hello easily.

Fu Yuanzhi also came up with an answer at this time, and said: "The leaves of the wheat are enlarged and widened, the shade is strengthened, and the sunlight is not comprehensive. ”

Song Huan nodded, with a teachable expression.

Song Huan continued: "In this case, we boldly guess down, does cave sowing have any impact on planting carousel? ”

"Is it feasible to expand the row spacing and reduce the plant spacing?"

"What about the wide and narrow rows of individual plants?"

"Can the wide and narrow rows of single plants be divided into other forms?"

"For example, about three feet between wide rows and about one foot between narrow rows?"

"Or, extremely wide and narrow rows, with large rows enlarged to more than four feet......"

"Of course, this is all my example, and when the time comes, you can really try it to know if it will work, right?"

Fu Yuanzhi said: "What do you mean by acupuncture? Is it the shape of the pit that was dug? ”

Song Huan choked.

Then he bowed his head, and without talking nonsense, he drew a hexagonal shape and a square, and then marked the points at each corner, and the location of those points was the pit where the seeds were sown.

Song Huan couldn't say that she had read the newspaper and knew about the investigation report.

The most effective use of nutrients by plants, including spatial factors and soil factors, was circular, and the utilization rate of square hole sowing was only 78.54%, while the utilization rate of hexagonal shape reached 90.69%, which increased the utilization rate by 15.5%.

Song Huan just directly told Fu Yuanzhi which kind of yield can be increased and land utilization rate can be improved according to hexagonal planting and square planting.

Thank you comrades who voted~

(End of chapter)