After finishing the farm work in the experimental field, Qiao Xuejun went to the mushroom house.
Start propagating mushrooms.
Uncle Zhang specially finished the work at hand and followed Qiao Xuejun to learn.
"I want to see how these mushrooms are grown!"
Qiao Xuejun wore a mask. During the growth period of mushrooms, there will be dense spores in the air, which will pose a risk of infection.
Qiao Xuejun looked at the mushroom rack for a while, and finally broke off a fresh oyster mushroom. As she picked it, she told Uncle Zhang: "Now is the step of making the first-level seed. First pick a fruiting body, which is a newly grown mushroom. Next, take a potato and cut it into cubes. Let's go to the laboratory."
Uncle Zhang was surprised: "We still need to go to the lab?"
Qiao Xuejun: "Didn't the mushroom bags you bred before always get moldy - always growing some green or gray mold? That means you didn't do a good job of disinfection, and there was contamination from other bacteria, which led to the failure of cultivation."
"I remember there is a clean bench in the lab. Let's go there."
Qiao Xuejun wanted to teach Uncle Zhang a lesson, so she told him everything, no matter how big or small.
If you want to use the laboratory, you have to say hello to Huo Antu and Professor An. They are using the laboratory during this period. Some of the equipment in the laboratory belongs to Zhao Xian, and some belongs to Huo Antu.
"You can use it. The clean bench is empty now." Huo Antu agreed quickly.
Qiao Xuejun asked: "Do you have agar and glucose?"
These are considered to be relatively basic materials in the laboratory. As expected, Huo Antu nodded: "Yes."
Qiao Xuejun and Uncle Zhang disinfected themselves and put on protective clothing before entering the laboratory.
"First, prepare a potato glucose culture medium. 1000ml of water, 200g of diced potatoes, 20g of agar, 20g of glucose... a ratio of 10:1:1... This is the liquid culture medium."
Qiao Xuejun showed Uncle Zhang how to do it and explained the details to him.
"Transfer the liquid culture medium into a test tube and make it into a bevel tube... like this... leave it there for a while until it solidifies slightly..."
"Take out our fruiting body and disinfect it first. Wipe the cap with alcohol."
Uncle Zhang asked, "Do you also disinfect the mushrooms?"
Qiao Xuejun: "Yes, the most feared thing in the mushroom breeding process is foreign bacteria. Disinfection must be done well, otherwise there is almost no possibility of success."
"Take some of the mushroom flesh from the place where the stem is connected to the cap, which is right here, and put it into the inclined tube."
"This step will allow it to begin to reproduce in the culture medium of the slant tube. Normally, it will grow hyphae inside."
…
Propagating mushrooms is not something that can be accomplished in a day or two. These days, Qiao Xuejun is busy in the fields in the morning and goes to the laboratory to cultivate mushrooms in the evening.
The first level species has been produced.
But the first-level species cannot be used directly to produce mushrooms, it has to be made into second-level and third-level species. What they need is the third-level species.
"Uncle Zhang, let's make the culture medium for the third-level seeds today. Find all the corn cobs? Keep them all?"
Uncle Zhang said, "I'll keep them all. The corn cobs will have a sweet taste when boiled in water. I usually boil a pot of sweet water like this. The young people who are repairing the stone wall will like to drink it."
Not really sweet either.
But now the drinking water at the base is filtered rainwater or groundwater, and the taste is not very good because some disinfectants are added during the filtration, which has a strange smell.
When Uncle Zhang boils water with corn cobs, it will mask the smell and turn it into the sweet taste of corn water.
Qiao Xuejun: "Crush the corn cobs and put them into bottles. They should be special culture bottles, but we don't have the conditions, so we use plastic bottles."
She added: "Originally, cottonseed husks were the best, but now that cottonseed husks are no longer available, corn cobs are used instead."
Her cotton has not yet been harvested, after which the cottonseed husks can be used for cultivation.
There were many props in the kitchen, and the corn cob was quickly broken into pieces.
Qiao Xuejun added water and stirred it, then reached out and picked up a handful of broken corn cobs and squeezed them tightly: "Look, Uncle Zhang, it's good to the point where water can come out. But be careful, the water can't flow down in a straight line, it's more appropriate to have it drip by drip."
Uncle Zhang studied hard and nodded: "Okay, I'll remember it."
Uncle Zhang's apprentice found an empty bottle of cooking oil and asked Qiao Xuejun, "Is this bottle okay?"
Qiao Xuejun took a look and shook her head: "It's too thin. It will be put into the pressure cooker later. It needs to be hard plastic that will not deform at high temperatures."
The instructions were clear, and the people in the kitchen found the right bottle in no time according to what Qiao Xuejun said.
Qiao Xuejun: "Look for more bottles like this. The more the better. The more bottles you have, the more mushroom bags you will have in the future. Also, you can empty the bottles in the mushroom house that are no longer growing mushrooms and bring them here."
Qiao Xuejun put the corn cob into the bottle: "This is the culture medium for the third-level seed. When the second-level seed is grown, we will inject it into the bottle of the third-level seed, and then we can wait for it to grow mushrooms."
…
After finishing today's mushroom propagation training course, Qiao Xuejun went off work to pick up the carpenter and check on the progress of the greenhouse frame.
"Master Zhao! You are so quick!"
As soon as she entered the woodworking workshop, Qiao Xuejun heard someone talking. "Master Zhao?" She didn't realize at that moment that they were calling Zhao Linlin.
Sure enough, Qiao Xuejun saw Zhao Linlin was sawing wood, and next to her was the carpenter who was praising her.
Qiao Xuejun couldn't see what tricks they had, but the carpenter praised him, "You have such a keen eye. You can measure the size exactly."
"Little carpenter?" Qiao Xuejun called her.
Zhao Linlin immediately raised her head and smiled happily when she saw Qiao Xuejun: "Are you going home?"
It's time to get off work. Since Qiao Xuejun hasn't left work yet, Zhao Linlin is working here waiting for her. It doesn't take long before she has completed most of the targets for tomorrow.
Qiao Xuejun: "Yes, go home."
Zhao Linlin didn't feel reluctant to leave. She immediately dropped the work in her hands and started packing up.
The carpenter looked at the tools that Zhao Linlin had put down with some regret, then looked at Qiao Xuejun, praising him and admitting, "Teacher Qiao! This Master Zhao is really good, he doesn't look that young at all."
It was completely beyond his expectation, he was actually a skilled worker!
"Our workshop is in need of such experienced workers. Would you consider working in our workshop long-term?"
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