There are many methods of soilless culture, and the effect is very different. It is suggested to choose the correct soilless culture method according to your own use. If it is for the commercial production of selling melons and vegetables to make money, it is necessary to produce melons and vegetables with good quality and low cost in order to have high income! But also has the advantages of small investment, high output, simple management and labor saving.
Suggestion: First of all, we should go to their planting site to see the planting effect and compare it with the greenhouse soil to see how much investment has been increased. How much has the output increased? Has the quality improved? Is the chemical fertilizer polluted? What is the cost of melons and vegetables? Comparative advantage, after judging the benefits, you can participate in the research.
If you can't see the scene, compare advantages and judge costs and benefits, don't take part in the research.
Second, it is necessary to see clearly the training methods, training contents, and whether it can be tracked and guided throughout. It is best for teachers to be one-to-one. They are trained according to the local climate and operated at the planting site. The learning effect in the classroom is much worse. Training courses can make money only by training, and general training can't achieve the effect of learning. Climate varies from place to place, and greenhouse construction is different in many aspects. People in the southeast and northwest together, it is impossible to guarantee the learning effect. If a link in production is not done well, there will be problems and the purpose of making money by planting will not be achieved. Of course, the more comprehensive and systematic the training content, the better, and it is best to include greenhouse design methods. It also depends on whether the teacher can follow and guide the whole process and solve the problem at any time. It is useless for students to discuss and communicate with each other!
Third, it depends on the address of the training unit: it is best to be in the compound of the national scientific research structure, such as China Academy of Agricultural Sciences and China Agricultural University, which are sure to be reliable and have good technology. Be careful in office buildings, office buildings and so-called associations, especially those with foreign brands!
In addition, nutrient solution soilless culture can not produce organic melons and vegetables, and the chemical pollution is serious. In order to cultivate nutrient solution soilless culture, we must first find out how much equipment and materials are needed for 1 mu soilless culture. Be sure to learn to prepare nutrient solution and make a culture tank!
If all kinds of agricultural wastes, such as straw manure, are used as raw materials to make soilless culture materials, first of all, how much can the culture materials be absorbed and utilized by melons and vegetables? How high is the utilization rate? You can only learn when you see it clearly, and you must learn to make cultural materials.
According to the above points, you can find a good place to learn the soilless cultivation technology of watermelon!