What about the premature senescence of vegetables in the greenhouse? These 7 tips are good to use early! Vegetable farmers are advised to collect.

The emergence of greenhouse vegetables not only enables consumers to eat a lot of out-of-season vegetables, but also enables vegetable farmers to expand economic benefits, but greenhouse vegetables often appear premature senescence in the middle and later stages of growth, resulting in lower yield and lower quality. what about the premature senescence of greenhouse vegetables? These 7 tips should be used early and good early. Vegetable farmers are advised to collect them.

What about the premature senescence of vegetables in greenhouse?

1. Crop rotation: rotation for more than 3 years, strive for changes in stubble and keep soil structure stable.

2. Balanced fertilization: fertilization must be used reasonably according to the fertilizer demand law of each kind of vegetable, so as to avoid the injury of vegetable root system caused by excessive application of chemical fertilizer, resulting in premature senescence of the plant. Topdressing is generally 15kg / mu of compound fertilizer and 30kg / mu of biological fertilizer. At the same time, pay attention to the combined use of foliar fertilizer.

3. Watering properly: watering should be chosen in the morning with fine weather to ensure a sunny day of 2-3 days after watering. After watering, it should be heated up and then ventilated to avoid premature senescence caused by low ground temperature and root injury. In addition, we should also pay attention to the amount of water each time is not too large, to prevent retting roots.

4. Keep leaves: it is incorrect for some vegetable farmers to remove leaves too hard and fall vines too much in order to save trouble in the later stage of cucumber growth. The number of leaves on the plant is too small, the production of photosynthate becomes less, which often leads to fruit deformity and weak growth. It is recommended to keep at least 12 functional leaves on each cucumber and control the number of fruits left.

5. Control temperature and humidity: in the later stage of vegetable growth, we should pay attention to control the air humidity to avoid the occurrence of a large number of diseases, but also conducive to the early ripening of fruits. For the greenhouse with severe cold injury, the young fruit should be removed in time to ensure the nutrition needed for plant growth and prevent plant premature senescence due to low temperature and low light.

6, the use of growth regulators: dipping flowers with medicine should be timely, generally dipping flowers or smearing pedicels when the flowers are half-blooming or full-blooming, and repeated dipping of flowers is strictly prohibited. Pay attention to the use of anti-falling hormone, tomato spirit dipped in flowers or spray flowers should not be sprayed on the leaves of vegetables.

7, prevention and control of diseases and insect pests: early spraying to prevent diseases and insect pests, but must pay attention to spraying must be scientific and reasonable, do not spray too frequently, the concentration is too high, so as not to cause drug damage and aggravate the premature senescence of vegetables.

These are the seven ways to prevent premature senescence of vegetables in the greenhouse, and vegetable farmers can focus on practice according to their own situation.