Greenhouse tomato field management measures
1. Water and Fertilizer Management Weeding out the weak seedlings, diseased seedlings, and ditch irrigation with a small amount of water for planting, and then warming in closed sheds to promote easing seedlings. 5-7 days after pouring a large water and pass a small breeze, after which should be as much as possible to control the heart seedlings 20-25 days, to prevent the plants grow mad, in the first size of the fruit when the walnut pouring water reminder fruit seedlings. After fruit enlargement and shape, pour the water for the second time, and then keep the soil moist. Usually, water is poured for about 10 days. Water is poured for 10-12 times during the whole growth period. When pouring the water for the first and second time, each fruit is refreshed. Mu diphosphoric acid 15 kg, 10 kg urea, after each pouring two water topdressing chemical fertilizer once, each application of 10 kg of urea mu, and in the results of the previous and late combination spray spraying foliar fertilizer production increase, phosphate two Hydrogen potassium, dry land, etc., watering should be carried out in the sunny morning, a small water pouring, avoid raining water and flood irrigation.
2. Temperature and humidity management Increase the ventilation in summer, decrease the ventilation in the fall, and the temperature of the shed is 22°C-26°C during the day. The maximum is not more than 32°C, the nighttime is 15°C-18°C, and the minimum is not less than 10°C. The relative humidity is 80-90% at the seedling stage, 60-70% of the fruiting period, and 50-60% of the result period. 3CO2 gas fertilizer can be applied in winter and spring of CO2, so that the concentration in the facility can reach 1000-1 500 mg/kg. Http://
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