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1. Technical training materials for greenhouse studios in counter-seasonal vegetable cultivation techniques, lifelight farmer's greenhouse engineering ltd.: in recent years, the area used to grow anti-season vegetables from greenhouses stands on an annual upward trend, generally yielding and producing more than twice as much as field cultivation. However, differences in the level of access to technology have resulted in low utilization of greenhouses and no facility advantage. To that end, after several years of exploratory experiments, we have drawn the following lessons that have proved to be more economically beneficial in production. 1. Rationally structured, well-planned, and appropriately increased double-cropping index, many vegetable farmers are pursuing the stocking index of vegetable replanting in large sheds, resulting in a poor recovery of land power. In fact, the use of greenhouses is mainly aimed at preserving the anti-season major, which can be followed only by the planting of small vegetables with shorter reproductive periods before or after the anti-season season. It's usually scheduled for the summer '69. ♪ after a deep, deep tumbling of the earth ♪
2. The sun, the destruction of bacteria, the reduction of insect density, rain-fed salt, the fertilization of soil and the eradication of closed vermin provide good standing conditions for normal production. In recent years, we have tried to sow a season of early rice in water-friendly steel sheds, with rotation, which has resulted in significant improvements in soil conditions, a significant reduction in disease and pests and a significant increase in vegetable production. 2. In recent years, considerable emphasis has been placed on the measurement of soil formulations and the balanced application of fertilizers, which have become important components of improved cultivation techniques. The total soil salt content required for normal growth of greenhouse vegetables is 22003000 mgkg, with over 6300 mmgkg root systems inverting to death. Temperature indoor temperatures are high and humidity high, organic fertilization is accelerated and phosphorus is 2-3 times more effective than the open ground. Nitrogen is high, and over-fertilization is highly likely to cause fertilizer. Potassium fattening of phosphorus should be increased accordingly, less nitrogen fattening should be applied, and no urine and non-supplied green fertilizers should be applied. We'll catch up with fat
3. A small number of times. Prevention of overconcentration. The application of organic fertilizers in a unit of greenhouse sheds that have been sown for more than three years should be reduced to about 60 normal uses to reduce the total salt concentration of the soil. Land with high total salt concentrations should focus on increasing organic fertilizers, corrosive acids and em microcosm, increasing soil carbon, nitrogen ratio and decomposition of salt. Bronze, zinc and magnesium are also applied to balance soil nutrients. Depot mapping formulations are introduced where conditions exist. Thirdly, the production of vegetables can be directly affected by rational planting, increasing the intensity of cultivation of greenhouse vegetables for space utilization and the low utilization of space in sheds. Proper planting would help to increase production. Secrets vary according to variety. In general, greenhouse acre plantations are about 15-20 years higher than in daejeon. It's too dense to be productive. Winter temperatures are low, light is weak, light is poor, and plants are growing up because of sunlight and poor ventilation
4. Diseases. Therefore, as far as possible, the species that can be put on board, such as eggplants. The pre-enrichment, mid-term estrangement and later estrangement, based on the principle of non-crowding of leaves, make full use of space. 4. To trim the chickens and prevent the vehicular vegetables from becoming weak in their seedlings, it is important to control the rooting of the water-control strain so that the subterranean section absorbs about 60 optics. In the case of eggplants, a certain assimilated area should be ensured during the pre-preparatory period, where the pre-preparatory plant consumes 60 per cent of nutrients and 50 per cent in the medium term and the post-reproductive growth 6070. In the case of eggplants, the pre-preparatory period should be covered by cutting and increasing the yield. Overstretching leads to high consumption of light co-operation, which inevitably affects the accumulation of nutrients in fruit and leads to a decline in yields and quality. V. Controlling the temperature of the shed used to be an error in production. The higher the temperature in the greenhouse, the faster the vegetables grow
5. Requirements, i. E. At 25-32, vary in the maximum temperature of different vegetables. Overceing the upper limit temperature inhibits the growth of the young fruit and produces a fissure of the fruit. At the same time, excessive temperatures, increased respiratory effects of plants, disruption in the functioning of the organism and imbalances in nutrition and reproductive growth can result in reduced yields. To better regulate temperature, sheds can be used to move north-south, vents can be set at both ends, vents can be opened when temperatures are too high, and evening water can be used to reduce temperature. The rational use of “steal gas” to combat “air damage” in winter spring uses the greenhouses to grow vegetables, sometimes for long periods of time, in order to prevent the loss of internal heat and external exchange within the greenhouses, thereby endangering the normal production and development of the vegetables, and even causing all the vegetables to rot and die overnight. It is therefore important to be careful of the damage. Vii. Changing water supply patterns, using drip-filled greenhouses as closed and semi-enclosed environments and water evaporation
6. Episode and dispersion are slow, with the evaporation of the general plant and soil moisture being equivalent only to 50 in the field, especially at night, in the middle of the day and at low temperatures, when the relative wetness of the air is the main cause of vegetable disease and spread. If greenhouse vegetables were to be immersed in water instead of dripping under membrane irrigation, they could significantly improve the greenhouse environment, reduce humidity, increase the temperature of the shed, reduce vegetable diseases and improve the quality of vegetables. At the same time, membrane cover is used for greenhouse vegetables. 8. The scientific use of pesticides and pests are currently dealt with mainly through medication. Precedence of disease, choice of medicine, generally copper-containing, zinc-containing agents are the first steps in the prevention process, which can both kill bacteria and increase resistance to bacterial intrusion and promote crop growth. Biological pesticides may also be used. Secondly, the improvement of the shed environment and the reduction of its humidity, such as the introduction of drip irrigation and increased ventilation, can reduce the incidence of pests and pests, with the aim of reducing the number of doses. It would be preferable to focus on the prevention of seedlings. If prevention is not in place for the first period, the disease is infected during the period of nursery, the disease has developed later, the disease, the bacteria have invaded the plant and the drug is not working well。
