How to grow soilless vegetables? The nutrient solution in soilless culture is relatively easy to control and can be adjusted at any time. Therefore, many vegetable farmers have begun to adopt vegetable soilless cultivation techniques. Today, in the following section, Huinong.com has also compiled a vegetable soilless cultivation technology. . 1 Select the substrate The matrix should be selected from materials with low cost, good gas permeability, good performance, strong solid foundation and strong water retention. Generally, inorganic granular materials such as slag and gravel are preferred. 2 Cultivation techniques There is a cultivation bag for soilless vegetable cultivation. Generally, it is made of 0.1mm thick and 70cm wide white polyethylene tubular plastic bag, folded into double layers, and put on the ropes on both sides. It is 20cm deep and has a U-shaped cross section. bag. According to the size of the cultivation site, the corresponding number of cultivation bags should be prepared, and the substrate should be placed in a neat arrangement. Each of the three rows of bags should be placed close together to form a cultivation sorghum with a width of 90-120 cm, and three rows of vegetables should be cultivated for each sorghum. That is, one row of vegetables is cultivated in each bag, and a 60 cm wide passage is left between the rafts for pouring nutrient solution and manual management. 3 preparation solution In order to make full use of the limited area and equipment, intercropping, interplanting a variety of different varieties of vegetables, and increasing the multiple cropping index, it is necessary to formulate nutrient solution to supply the growth and development needs of various vegetables. The preparation method of nutrient solution is to put the selected fertilizer into a good container and add a certain amount of water. The water surface is about 20cm away from the mouth of the container. For the hard-to-dissolve fertilizer, it can be dissolved with hot water first, then put again. Add appropriate amount of water into the container and mix well to synthesize nutrient solution between water and fertilizer. The concentration of nutrient solution should not exceed 0.2%, and the pH should be between 5.5 and 6.5. Due to the evaporation of water and the absorption of nutrients by crops, the concentration and pH of nutrient solution often change. It should be tested and adjusted frequently, generally 7~15d. Test 1 time. 4 pouring management After the soilless vegetables are planted, the fertilizer is generally not added to the substrate, and the nutrient solution can be directly applied. According to plant size and cultivation season, intermittent, timed and quantitative application of nutrient solution, less in the early stage, as the plant grows continuously, the temperature increases, the amount of nutrient solution should be increased appropriately, and it is poured 2 to 3 times a day, using watering can It is best to pour. It is advisable to keep the substrate moist, and do not overdo it, so as to avoid causing root deficiency and root damage. The suitable temperature of the nutrient solution is 20 ~ 25 ° C, the relative humidity should be maintained for 2.5 h during the day, the air content of the nutrient solution should be adjusted 50% ~ 60%, 80% ~ 85% at night is appropriate, the humidity is controlled at 15% ~ 30%, generally It can be higher in the morning, lower in the afternoon and at night, which is conducive to the accumulation of organic matter and the robust growth of plants. Generally speaking, in the cultivation of soilless vegetables, in order to prevent falling flowers and fruit, and regulate plant growth and development, comprehensive use of biological hormones, spraying ethephon, chlormequat, and increasing production of the spirit, the concentration should be appropriate, and the spraying should be uniform. For pest control, in addition to the selection of disease-resistant varieties and seed disinfection, it can cultivate strong seedlings, reduce humidity, ventilate and ventilate, adopt comprehensive prevention and control technical measures combining biological agents and chemical agents, and use multiple chemicals alternately, with remarkable effects. The effect is higher. The above is all the main points of vegetable soilless cultivation technology. If you are also planning to try this technology, you can first come to Huinong.com to learn more about related technologies and consider it according to your actual situation! Jelly Glue,Jelly Gelatin For Woodworking,High Viscosity Jelly Glue,Industrial Jelly Glue Hebei Haodong Biological Technology Co.,Ltd. , https://www.hdgelatin.com
