Vegetable greenhouses in matters that should be paid attention to using a thermometer

A lot of people in the vegetable greenhouses use thermometer will hang the thermometer, here, the instrument want to say: vegetable greenhouses in the thermometer is not literally hanging in a shed, the suspension height and position are exquisite. Suspension is undeserved, be numerical value is not accurate, management will mislead the vegetables, so it's difficult to improve yield and quality. Suspension location choice in production, a lot of people in order to convenient view, will be hanging from the thermometer PengShi snort mouth below the back wall. This is not correct. Because in fresh air under the mouth, the outside air conditioning flows directly to sink, lead to changes in temperature, air temperature change is frequent, unstable, vegetable greenhouses thermometer can't accurately reflect the actual temperature of vegetable growth space. In addition, before PengShi roofing, contact with the outside world is big, heat faster, the temperature is lower, also cannot accurately reflect relative normal situation. The best position is in the central PengShi thermometer suspension. From the wall and fresh mouth are far larger temperature difference, the numerical stability, the most can reflect PengShi vegetables grow in parts of the temperature, the correct guidance PengShi vegetables most good management. Within a certain PengShi ride height of thermometer suspension is the most suitable height within 250 px plant growing point up and down. The temperature here is relatively stable, the most easy adjustment, and convenient observation, don't have to pick up the put down, will not affect the thermometer. Adjust height need special attention is, the thermometer to as PengShi vegetables grow adjust, can't hang on. In practical production, see more PengShi inside plant height has been far more than a thermometer, but farmers don't adjust the phenomenon. In this way, the thermometer's position relative to the plant is different, the temperature difference is very big, such as plant growth has reached 35 ℃, near the central plant may only some of the more than 30 ℃. In this way, relative management standard is different before and after, if still carried out in accordance with the basis at the beginning of the management, is very bad for the growth of vegetables. Vegetable greenhouses, therefore, the suspension of the thermometer, the adjustment of height only with plant height, usually near the plant growing point, so as to better control.