Seed retention technique of water celery

Water celery adopts asexual reproduction, and the stem is its breeding material. In water cropping, seeds and plants were selected in late November, and the seed selection criteria were as follows: good characteristics of the remaining varieties, moderate plant height, stout stem, short internodes, more and strong axillary buds, developed root system, no insect and no disease. The selected plants were then transferred to the reserved field.

To keep farming, you should choose a place where it is leeward and sunny and where drainage and irrigation are convenient. Fine soil preparation and thick application of base fertilizer were carried out in the middle of October. When planting plants, keep 1 cm water layer in the field, the row-plant spacing is 25 cm, and 3-4 plants are planted in each hole. The water layer of 5-6 cm can be maintained 7-8 days after planting. If you encounter a strong cold current, you can add the water layer to 15-20 cm deep, and then drop the water layer to 5-6 cm after the cold current.

Keep shallow water irrigation frequently after overwintering. Compound fertilizer was applied from April to May. Sparse seedlings and pull out some ramets to facilitate ventilation and light, and keep the field moist from June to July to dwarf the seeds and prevent lodging. At the end of spring and the beginning of summer, the moss growing in the field affects the increase of water temperature, and some moss are entangled around the plants, affecting their normal growth.

After June, pest control and other field management work should be carried out on the ridges of the fields, and they should no longer be trampled in the fields so as not to break the plants. In the first and middle of August, the seeds and plants can be harvested to accelerate budding.

Before winter, fertilizer and water should be properly controlled in dry farming fields to make the plants short and strong. In the middle and last ten days of April, the selected plants were uprooted, cut off the aboveground part of 10 cm, and replanted. Generally, the spacing between rows and plants was about 15 cm. The management of fertilizer and water should be strengthened. In early June, the aboveground parts were cut off from 5 cm above the soil, so that more seeds and plants could sprout. After cutting, apply 25% compound fertilizer 35 kg per mu, or mature human feces and urine 3000 kg, potassium chloride 10 kg. The fields are always moist and pay attention to the prevention and control of diseases and insect pests. Sprouting can be pulled out in the middle and late August.