Bimetallic thermometer how to manage greenhouse tomato?

Usually, we can buy in the supermarket or market of fresh tomato, we are used to greenhouse tomato uninterrupted supply all the year round, how do you know the farmer uncle in planting and management of tomato in the greenhouse? Spring early tomato engraftment period depends on the microclimate conditions inside the greenhouse. The index is 10 cm ground temperature should be stable in more than 8 ℃, the lowest temperature above 0 ℃ ( Best can reach 6 - 7℃） In the 5 -, and stability Home after 7 days, here we will use the greenhouses special agricultural bimetallic thermometer for temperature monitoring. In order to timely early engraftment, should be 15 - before engraftment Buckle tent to roast, 20 days in late march - more commonly Mid to late April engraftment. To demand higher temperature after engraftment, accelerate the slow seedlings, for flower fruit to lay the material foundation. So 3 - after engraftment 4 days is not fresh, relative to maintain 25 Around 30 ℃, humidity of the air can reach 80%. Slow after seedling to lower canopy temperature and increasing air flow, 20 - during the day 13 to 25 ℃, night 15 ℃ or so, but at night the temperature not too low, otherwise affecting the normal development of plants and the humidity below 60%. In the fruit enlargement stage, the temperature can be appropriately increase, 25 - during the day 15 to 28 ℃, night 17 ℃, humidity of 45% 60%, the soil moisture 85% 95%. Fruit to mature, the canopy temperature can raise 2 - a little 3 ℃, speeds up the red ripe fruit. But after hanging red line should not be high temperature, otherwise it will affect the formation of lycopene, negatively affect the color and quality. To maintain the optimum temperature when the night is not lower than the lowest temperature 15 ℃, day and night can be ventilated take a breath. Don't look down upon the common bimetallic thermometer, the tomato in the greenhouse planting, have played an important role in environmental monitoring, agricultural cultivation, now that pays attention to the nature, also pay attention to scientific planting.