Operation and maintenance of rice seedling bed in greenhouse

The greenhouse of rice seedling bed is mainly composed of greenhouse skeleton, transparent mulch (including plastic film, plastic plate, PC board, etc.), several single nursery beds and spray system, etc. The device has the advantages of compact structure, high land utilization rate and convenient operation. Method of operation 1. The leveling of the site and the cement foundation must be done well before installation. In order to make the foundation firm, the place with solid foundation soil should be selected. Prevent the scaffolding from being damaged by ground subsidence or crustal change. two。 The orientation of the greenhouse, that is, the direction of the roof of the greenhouse, should be determined before installation. The orientation of the greenhouse should be comprehensively considered in the light of the local main wind direction. Generally speaking, in most latitudes of our country, the orientation of the greenhouse should take the north-south direction, so that the lighting of various parts of the greenhouse is more uniform, in order to obtain sufficient sunlight and promote the growth of seedlings. 3. From the point of view of safety, in order to reduce the influence of heat release and wind pressure on the greenhouse, the shelter zone should be selected when selecting the site before installation. In areas often hit by typhoons or thunderstorms, attention should be paid to removing stagnant water in the ceiling and enhancing the firmness of the scaffolding. 4. After the installation of the greenhouse is completed, users need to ensure that the water and electricity are normal to give full play to the function of the facility. 5. Fix the seedling tray according to the operation instructions and pay attention to the strength during operation so as not to damage the degree of freedom and strength of the shelf and avoid difficulties in operation. 6. Turn on the pump switch, and the watering water will sprinkle water evenly from the sprinkler to the seedling plate. When ventilation, you should pay attention to the size of the wind, it is best to spray water in the minimum wind, when the seedling plate has enough water, turn off the switch in time. 7. Do not move at will after the rice seedling bed is fixed. 8. When the rice seedling bed is not in use, the sun-dried water should be waterproof and dehumidified, so that it can continue to be used in the second year, and the adjusting part of the machine should be coated with lubricating oil for maintenance. 9. The changes of temperature and moisture in the seedling plate in the greenhouse should be observed frequently, and the temperature and humidity should be reasonably controlled according to the agronomic requirements. Optional hot air stove can be used to adjust the temperature. Maintain and maintain the balance of the greenhouse: when building the greenhouse, if the ground is not smooth, the greenhouse may tilt to one side. Once found, it should be righted in time. The method is to pull the skeleton from the opposite direction with a rope or wire and straighten it step by step. Before righting, the ground at the bottom of the skeleton in the opposite direction should be leveled to the left and right symmetries to prevent excessive force from breaking the skeleton. Prevent artificial increase in load: do not arbitrarily bring lentils, towel gourd, pumpkin and other climbing fruits and vegetables to the greenhouse, otherwise the skeleton will be difficult to bear in windy and rainy weather, and it is easy to crack, break and collapse the skeleton. Regularly check whether the bolts and other fixtures at each joint are loose and fall off, repair them in time and pay attention to anti-rust. Avoid scratching the greenhouse film: in the use of the greenhouse, be careful not to hit the greenhouse film with sharp objects, so as not to scratch the greenhouse film. In case there is a crack in the greenhouse film, it can be repaired with adhesive or transparent tape. Polyethylene film can be repaired with polyurethane adhesive. Always keep the greenhouse film clean: generally, the greenhouse film must be replaced for 2 ~ 3 years, so as not to affect the light transmittance and cause poor cultivation efficiency in the greenhouse. The use of new film is recommended for raising seedlings in greenhouse in winter and spring. Scaffolding maintenance: the steel shed should be painted with antirust paint once a year, especially the rusty parts and connecting parts that are easy to rust. If the steel wire and bamboo embedded in the scaffolding of the greenhouse are exposed, they should be polished and wrapped so as not to scratch the greenhouse film. Individual broken single frames should be replaced in time so as not to affect the overall firmness. Maintenance of ground anchor line and pressure film belt: if the ground anchor line and pressure film belt are loose or broken, they should be fastened or replaced in time.