It is difficult for celery to sprout under high temperature. Matters needing attention for raising celery seedlings in summer.

Every summer, raising celery seedlings has become the biggest problem for many vegetable farmers. Celery characteristics like cold and cool, cold-resistant and afraid of heat. June-July coincides with high temperature, high humidity, strong light weather, high temperature weather, celery sprouting difficulty, coupled with insect pests, especially aphids and underground insects, celery is prone to lack of seedlings and dead trees. In summer, celery seedlings should pay attention to the following points:

Celery seedling

First, control the budding temperature. In summer, the external temperature is high and it is difficult to sprout, so we can adjust measures to local conditions. The ambient temperature of celery sprouting is controlled at 15-20 ℃, and it can germinate after about 10 days.

Second, prevent continuous cropping and soil consolidation. Continuous cropping or soil consolidation is caused by two aspects: first, the soil quality of the bed soil is not good; and there is insufficient bottom water and low humus content. Therefore, choose the land with loose and fertile soil and rich in organic matter to build celery seedbed.

Third, use fertilizer scientifically. Excessive application of nitrogen fertilizer results in growing seedlings, thin leaves and light color, and few roots. When the temperature is too high, the respiration of celery seedlings is enhanced, which consumes more nutrients, and it is easy to appear weak seedlings, resulting in dead seedlings.

Fourth, shading the sun and preventing rain. The environment of high temperature, strong light and heavy rain in summer hinders the emergence of celery, so it is necessary to shade the sun and prevent rain to raise seedlings.

Fifth, prevention and control of underground insects. Control mole cricket and other underground insects, can stir-fry the wheat bran, add 90% trichlorfon powder, mix well to make poison bait, sprinkle around the seedbed.

Sixth, strengthen the management of seedling stage. Generally, after sowing, the celery seedbed temperature is controlled at 15-20 ℃, and the soil relative humidity is kept at 85% for 8-10 days. After completing the seedlings, the double seedlings were removed first, and 10 days later, the seedling spacing of the second time was 1-1.5cm. One month later, the seedling spacing of the third time was 5cm, and the celery seedlings could be transplanted according to the plant spacing of 5cm. After planting, the seedlings were watered to save the seedlings. Celery seedlings should keep the soil moist and suitable temperature and light environment.