Every summer, celery seedlings have caused many problems for farmers. The characteristics of celery like cold, cold and heat afraid, 6-7 months coincide with high temperature, high humidity, light weather, celery germination difficulties in hot weather, coupled with pest damage, especially the aphids and underground pests, it is easy to lack Seedlings, dead tree phenomenon.

Summer celery nursery should master the following technical points:

First, pay attention to control germination temperature. In summer, due to high outside temperature and difficulty in germination, it can be adapted to local conditions. The germination ambient temperature is controlled at 15 to 20 degrees Celsius and germination occurs after about 10 days.

Second, prevent continuous cropping or soil consolidation. Continuous cropping or soil compaction is often caused by two reasons: on the one hand, poor bed soil quality; on the other hand, insufficient bottom water and low humus content. Therefore, it is necessary to select soil-rich, fertile, soil organic matter-rich plots to build seedbeds.

Third, scientific fertilizer. Excessive application of nitrogen fertilizer, resulting in leggy seedlings, thin pale leaves, less root system. When the temperature is too high, the respiration of the seedlings is enhanced, more nutrients are consumed, weak seedlings are easily formed, and dead seedlings are caused.

Fourth, shade and rain. Summer heat, light, heavy rain environment is not conducive to the emergence of celery, so it is necessary to shade rain seedlings.

Fifth, pay attention to the prevention and control of underground pests. In order to prevent earthworms and other underground pests, bran can be fried in a pan, and 90% trichlorfon powder is added to mix and make baits and sprinkled around the seedbed.

Sixth, strengthen seedling management. After sowing, the seedbed temperature should be controlled at 15°C-20°C, the relative humidity of the soil should be kept at about 85%, and the seedlings can be grown 8-10 days. After the seedlings were planted, the second seedling was firstly planted, and the second seedling was planted 10 days later. The seedling distance was 1-1.5 cm. The third seedling was planted one month later and the seedling distance was 5 cm. The seedlings that emerged from the seedlings could be transplanted separately at a spacing of 5 cm. Watering after planting can effectively save seedlings. Seedling soil moisture and a suitable temperature and light environment must be maintained.

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