There are many reasons for melon cracking, of which the following are the three main reasons: I. Unbalanced fertilizer and water supply during the expansion period After melons began to grow, the melons began to inflate until they stopped expanding. This period is the period of muskmelon expansion (about 25 days), which is the period when melons need the largest amount of fertilizer. If the water is controlled in the early stage of the expansion, the lack of water in the early stage of fruit enlargement will cause premature aging and hardening of the rind. If watering is too late at the end of the enlargement, the pulp inside the melon will rapidly enlarge and grow. The premature aging and hardening of the melon skin will cause the growth rate to slow down. As a result, the internal flesh will burst through the aging epidermis and the fruit will crack. In order to prevent melons from cracking, it is necessary to rationally manage fertilizers, and the amount of watering and fertilizer should be relatively increased in order to meet the needs of melons during the expansion period of melons. General Mushi Sanyuan compound fertilizer 25-35 kg, to maintain a certain degree of soil moisture, watering should be uniform, avoid uneven soil moisture, not to flood irrigation after soil drought, so as not to cause crack melon. After the fruit enlargement period is over, it is necessary to control the moisture and not to flood the water. In particular, avoid watering for about 10 days before picking to prevent cracking of the melons. Second, improper use of hormones caused melon In the cultivation of melons in the facility, since the environmental conditions in the greenhouse are difficult to meet the requirements of the melon flowering period on the environmental conditions, the sinking rate is low. Therefore, melon farmers often use hormones to improve the rate of sitting. However, during the treatment process, if hormones are used improperly, such as excessive hormone concentration, repeated treatment, and high-temperature treatment, etc., may cause fissuring of melons. In order to prevent cracked melons caused by improper use of hormones, the following points should be noted: 1. No matter which kind of hormones are used or which method is used to treat the melons, the concentration of the liquid medicine should be formulated according to the pharmaceutical instructions according to the performance of the medicament and the temperature index of the booth. 2. When hormones are used to treat melons, treat the melons as much as possible during the high temperature period to prevent the solution from evaporating and causing the concentration to be too high and cause fissures. 3. After flowering, if there are too many liquids attached to the melon, use the hand to hit the vines and remove excess liquid to reduce the chance of cracking the melons. 4. In order to prevent the recurring treatment of melons caused by fissured melons, a 2.5% Suspension-type suspension containing pigments can be added to the solution for pre-flower spray. This not only makes the spray marks, but also avoids repeated use of drugs. Prevent the occurrence of early gray mold. Third, the lack of trace elements In the absence of trace elements such as calcium and boron in the soil, it is also easy to form melons. After sitting on melon, it can be combined with watering with 0.3% calcium chloride and 0.12% -0.25% boric acid solution for foliar spray, spraying once every 7 days, and spraying 2-3 times to supplement trace elements. insufficient. Linux Face Recognition,Face Recognition Access,Face Recognition Door Access System,Face Recognition Access Control System GRANDING TECHNOLOGY CO LTD , https://www.grandingsecurity.com