The technology of planting watercress is not complicated, as long as it has loose, fertile soil, rich in organic matter and easy irrigation, good water retention performance. Water celery is one of the first vegetable types planted by vegetable farmers, water celery planting methods are as follows:\x0d\ 1, stubble selection , choose the soil is fertile, fertilizer and water retention performance is good, drainage and irrigation is convenient for shallow lotus root fields, spring corn fields, early soybean fields and other stubble. \x0d\ 2, fertilization and land preparation 7-10 days before sowing, per mu of high-quality organic fertilizer 2000-2500 kg or cake fertilizer 100-150 kg or more, and then deep plowing on the water composting, the more plowing and turning, the deeper the turning, the longer the composting time, the easier it is to get high yield. In the last ploughing and tilling of the land mu Shi three elements of compound fertilizer more than 50-75 kg, to achieve field leveling. Light rotten, surrounded by building a good high ridge (height of more than 50 centimeters), irrigation with a thin layer of water. \x0d\ 3, selecting seed germination In mid to late August, the seed celery stalks will be bundled with straw, 2-3 ways per bundle, 20-30 cm thick. After bundling, the seed stems horizontal layer, vertical layer, cross the pile in the shade of the sun or the house behind the north wall root, covered with straw or other watercress, there is no natural conditions, available shade net shade. Every day before 9 a.m., after 4 p.m. each watering water once, to keep moist, to prevent heat. In cool, aerated, moist conditions, after about 7 days, the leaf axils of each section grow 1-2 cm shoots. Rooting takes place at the same time. Such germinated and rooted seed stems can be sown, and the spreading shakes can be cut into lengths of about 30-40 centimeters. The row of seeds can be cut into about 60 centimeters. \x0d\ 4, shallow water row seed The suitable sowing period of watercress in early September, too late is not conducive to high yield, in order to capture high yield, row seed is the basis, after germination of the seed stems can be row seed, row seed method is to germinate the seed stems, the end of the stem end toward the ridge, the end of the tip to the middle of the field, the buds upward. When the row of seeds, but also pay attention to the following points: First, to ensure the density, row of seeds spacing is usually 6-8 cm; generally 200-250 kilograms of seed per mu. Secondly, the field surface should be leveled, in order to facilitate the growth of buds and roots, so as to achieve consistent growth. This stage is the most avoidable field height, high drought, unfavorable rooting and long shoots; low waterlogging, the sun hot shallow water scalded shoots, to be grown into seedlings later, gradually deepen the water layer. \x0d\ 5, fertilizer treatment of insects In the seedlings to grow to 2-3 leaves, start fertilizer, to promote the plant as soon as possible to grow, and then every 7-10 days fertilizer, each time with urea 10-15 kg per mu. Found aphids, timely use of aphids net spray control or deep water (about 4 hours) aphid extermination. \x0d\ 6, water layer management After rowing seeds to be water celery fully rooted growth can be drained field water, light shelving once, and later to gradually deepen the water layer, the initial 5-10 cm. Later, the water layer is 30 centimeters, keeping the plants exposed to the water surface about 15 centimeters, after winter, the water cress stops growing, mainly to irrigate to keep warm and prevent freezing. \x0d\ 7, even seedlings buried deep. When the seedlings up to about 25 cm, combined with the removal of weeds and mixed fertilizers, field finishing, one is to move dense to make up for the sparse, so that the distribution of the field is uniform; the second is to hold down the high and lift the low, so that the field group grows neatly, the height of the same. At the same time, it can be softened by deep burial into the soil to improve the quality of watercress. \x0d\ Specific methods: in early to mid-November, the plant height of 25-30 centimeters or more, with two hands to pick up all the plant markers, in situ deep planting once, 10-15 plants per hole. Depending on the plant height, the depth of the soil, leaving more than 10 centimeters on the ground. The rest are all planted into the rotten mud, so that it will gradually soften and turn white under the conditions of lack of light. In the deep burial, two hands and five fingers spread out to clamp the roots of the plant straight into the soil, the requirements are not crooked and not rolled roots, which is to improve the quality of watercress, food value and enter the big market in the city of Southern Jiangsu and other important measures. However, in the soil quality is not rotten field is, this approach will be difficult to implement, at the same time, the yield of such fields will not be too high. \x0d\ 8, timely harvest Harvest time and standards in different areas and different, do not need to carry out deep buried softening of the region, in the middle and late November can be marketed, after the deep buried softening of the market time to be appropriately delayed, at the same time can be based on the market demand, the price of the market at a higher time, in particular, should be in the New Year's Day, the Spring Festival, two major holiday markets a large number of marketed. \x0d\ Tips: watercress reproduction on the stolon, through the section of easy rooting, two pinnately compound leaves, leaf margins have coarse serration, petiole slender. White flowers in summer, compound umbels. Does not bear seeds or empty seeds, asexual reproduction by axillary buds on each node of the mother meridian. Suitable for cultivation in paddy fields with a deep layer of mud. Generally spring cultivation of mother plants, fall cultivation, winter or early spring harvest.