The traditional planting method of celery is usually planted from September to December and harvested from December to April. The planting of celery in the off-season sowing in May-June is better. In the process of planting celery in the off-season, a variety of problems are often encountered. If you need to make a good six-point pass, you can make celery more productive.

Seeding

Celery can be cultivated in summer and can also be transplanted. Sowing in early May to late June, when the high-temperature and heavy rain season occurs, there is a high demand for varieties, and varieties with heat-resistance and resistance should be selected. Before sowing, the seeds should be soaked, soaked in warm water at 48°C for half an hour, and then germinated until the seeds are 50% germinated. Celery sprouts slowly, seedling period is very long, in order to prevent high temperature and ground temperature injury seedlings, to promote emergence and prevent heavy rain erosion, should be shaded in the surface, the commonly used shade cover are: straw, straw, shade net, etc. Remove the cover after emergence, so as not to affect the growth of celery. The seedling age is controlled in about 40 days, 5 to 6 leaves can be planted.

Planting clearance

Apply 3000 to 5000 kg of rotten farmyard fertilizer and 40 to 50 kg of ternary compound fertilizer per mu. Plunge over 20 cm deep to fully mix the soil and fertilizer. Stop watering 2~3 days before transplanting. Dig the seedlings with shovel soil. Do not damage the leaves and roots as much as possible when digging the seedlings. Let the plants bring in more soil to facilitate survival after planting. The celery seedlings are planted according to the size and size of the seedlings. Colonization should be carried out after 5 pm and the root water should be set after planting.

Visor off

Summer cultivation of celery should cover shade nets to cool and moisturize, which is beneficial to growth, reduce fiber, and improve quality. After planting, use shade nets to form arches or flat sheds. The height of the shed is 2 to 2.5 meters. It is better that sunlight does not reach celery from 10 am to 3 pm. Summer celery should be shaded throughout the growing season. Covering the shade net can reduce the light intensity, reduce the evaporation of soil moisture, help moisture and drought, and reduce the mechanical damage caused by heavy rain on celery.

Tian Guanguan

The early growth of celery is slow, but it is also a high-temperature rainy season. It is often a harm to weeds. Therefore, we should cultivate the weeds in time. It is common to combine tillage and weeding before every top dressing. Since the root system of celery is shallow, the cultivator should be shallow, as long as it can achieve the purposes of weeding and loosing, and it must not be too deep to avoid damaging the root system. The growth period of summer celery is short, so the application of nitrogen fertilizer is mainly to promote the growth of stems and leaves. Fertilizer applied on the basis of applying base fertilizer, after 5-7 days after emergence, the first topdressing urea is 10 kg/mu. After every 8~10 days, top dressing is applied. Mushi urea is 10~12 kg. Generally, fertilizer is required. 4 times. Spray 2~3 times of instant boron fertilizer or superphosphate leaching during the growth of summer celery to prevent petiole from cracking and rotten, and prevent yellowing of the petiole in the later period. The growth and development of Xia celery requires moist environmental conditions. From the start of sowing to the harvest of celery, we must ensure that the field is moist for the growth of stems and leaves.

Diseases and pests

The common diseases of celery include damping-off, blight, soft rot, leaf spot, and anthracnose. Pests include aphids, hummocks, cockroaches, and spotted lilies. Vegetable farmers should pay attention to timely spraying and prevention.

Harvesting

According to the growth of celery and market demand timely harvest. Due to hot summer celery growing season, is not conducive to the growth of celery, therefore, the harvest is generally earlier than the autumn celery, when the stem is 40 to 60 cm high quality, high yield, green leaves and stems, at this time harvesting and selling high prices. Take care to prevent injury during harvest and keep the whole plant intact.

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