Soilless cultivation report

Process

According to the equipment requirements and related technical requirements of soilless cultivation, we divide the research process into four stages: first, the cleaning and disinfection of the soilless cultivation room; The third is seed selection and seedling cultivation, the third is troughing, the fourth is preparing nutrient solution, the fifth is building scaffolds, and the sixth is pest control.

(1) Cleaning and disinfection of soilless cultivation room

Soilless cultivation is a quite new term. What is soilless culture? What equipment is needed? When we followed Ms. Deng to the Biological Park for the first time, we saw the soilless cultivation room that our school had built long ago. It is like a transparent semi-circular plastic house. The roof is an arched support made of water pipes, and the support is covered with a transparent plastic sheet. There is a screen on the door. Walking around the small house, we found that the ground was paved with a layer of fine sand, and there were three side-by-side sinks connected by foam boards, but they were already very uneven. The ground between the sinks was paved with two aisles of plastic flooring. Go all the way in, and at the end of the water tank, there are three pools. Ms. Deng said that these three pools are filled with nutrient solution, which are connected to the three pools. Each pool has a motor. Ms. Deng said that when the motor is turned on, the nutrient solution in the pool will automatically flow to the opposite side. into the pool, and then flows back into the pool, repeating the cycle. Ms. Deng told us that these three tanks are where we cultivate plants. Under the guidance of Ms. Deng, we began to organize the soilless cultivation room. Pull weeds, pick up fallen leaves, sweep up garbage...then replace the foam boards and plastic films in the three tanks with new ones, fill the ponds with fresh water, and repair the holes in the transparent film on the roof. Fix the lock... Everything is ready, just waiting for the seeds. (2) Seedling cultivation After discussion, we decided to try growing some familiar vegetables first. So we asked Ms. Deng to help us apply to the school to buy some vegetable seeds. After waiting and hoping, we finally bought the seeds, and we are very happy. Those seeds include cucumbers, white melons, and tomatoes. The seeds of cucumber are long, while the seeds of white melon are smaller than those of cucumber. What about tomatoes? Tomato seeds are round and flat. We all need to plant. We came to the shade shed. There were many weeds and some wild flowers on the sandy ground of the shade shed. After we went in, we first pulled weeds, and we pulled and pulled, and finally we pulled out the front part, but there were still some unfinished things at the back. We pulled out the back ones, and Ms. Deng watered them on the sand, then put some sawdust on the sand and mixed it with the sand. We are very surprised, why should we put sawdust? Oh, it turns out it is to help the seeds germinate better. So we started planting seeds of three plants. First, we used the tip of a shovel to draw small trenches on the mixed sand. Then Ms. Deng gave some cucumber seeds to each of us. We spread the cucumber seeds evenly in the trench, and then put the white melons in. seeds and tomato seeds, and then use a water pipe to water the seeds on the sand. Finally, use a shovel to dig some sand to cover the seeds, and then water them. We came back happily. In the next few days, we watered these seeds every day and carefully observed the changes: they sprouted, broke the ground, grew leaves, and grew taller... On the 12th day, the cucumber had three leaves, which was ready. The transplant is on the groove. (3) Transplantation Transplantation is an important operation stage in soilless culture. How to do this stage well? This is what we do: first uproot the seedlings that have grown to about 5 cm high. Be careful to use a small shovel when pulling out so as not to damage the roots. Then take them to the soilless cultivation room and put the seedlings first. In a black frame with many small holes in the middle and bottom, let the roots hang down from the holes below, and then carefully put the set seedlings into the round holes on the foam board, every other one. tree. Start the motor of the pool and let the water circulate into the trough. In this way, the transplanting is done. (4) Prepare nutrient solution. Three days after the seedlings were transplanted, we took out some seedlings and found that the roots were growing well, indicating that the transplanting was successful. Then, the next step should be to strengthen the nutrients for the seedlings so that they can It's almost growing. This requires preparing a nutrient solution for them. There are very strict requirements for preparing nutrient solutions, and different plants require different fertilizers and different amounts. So Ms. Deng came to match it in person. We saw Ms. Deng weighing with a scale. First, she weighed 750 grams of white fertilizer, and then weighed 1,250 grams of yellow compound fertilizer. She put them together in a basin, added some water, and just covered it. fertilizer. Then Ms. Deng put on plastic gloves, put her hand into the basin and stirred the fertilizer until it dissolved. Then pour it into the sink. The nutrient solution is thus prepared. (5) Building the scaffold After preparing the nutrient solution and placing it in the pool, we found that the seedlings grew very fast, one day at a time. In the blink of an eye, the cucumber seedlings stretched out tentacles and were about to climb up. Ms. Deng said that they should be put on a shelf. According to Ms. Deng's suggestion, we wanted to use nearby materials and saw down the dead bamboos in the biological garden to build a shelf. So we started sawing and sawed a few branches. We found that we couldn't cut them at all, and Ms. Deng couldn't do it either. Very strenuous. Later we suggested to report to the school and ask the school to buy some bamboo for us. After buying the bamboos, we first cut them into 100 pieces of 1.2 meters long, then used a hammer to cross-nail them diagonally on the sand next to the sink, then tied them tightly with wires, and used whole bamboos on the shelves. Connected. Now that the frame is set up, our seedlings can grow up quickly.

Three research results

After more than two months of research experiments, we have successfully conducted experiments on soilless cultivation of cucumbers, white melons and tomatoes. Now, the cucumbers are growing well and are expected to grow well. The fruit will be ready in a month, and then you can taste the fruits of our labor. White melons and tomatoes also grow normally. From this study we draw some conclusions: Vegetables are suitable for soilless cultivation. Our experimental operations have reached the technical requirements of general soilless cultivation.