Key points of coriander cultivation techniques

As a seasoning vegetable, coriander is rich in nutrition and simple in cultivation and management. the key points of coriander cultivation techniques are introduced as follows: the characteristics of parsley belong to Umbelliferae. It can withstand the low temperature of-1 ℃ to 2 ℃, and the suitable growth temperature is from 17 ℃ to 20 ℃. It grows slowly when it exceeds 20 ℃, and stops growing when it is 30 ℃. Coriander is not strict on soil, but the soil with good soil structure, strong fertilizer and water conservation and high content of organic matter is beneficial to the growth of coriander. There are large leaf varieties and leaflet varieties of parsley in the selection of coriander. Large leaf varieties have high plant height, large leaves, less and shallow engraving, light aroma and high yield; leaflet varieties have shorter plants, small leaves, deep engraving, strong aroma, cold tolerance and strong adaptability, but the yield is slightly lower, so leaflet varieties are often selected in general cultivation. Open field coriander cultivation techniques coriander can be cultivated in open field in spring, autumn and winter. It is not suitable to water too much at seedling stage. When the seedling grows to 10 cm, the plant grows vigorously and should be watered frequently to keep the soil surface moist. At the same time of watering, the available nitrogen fertilizer was applied 1 or 2 times. Pay attention to ploughing and proper interseedling, and remove weeds during interseedling. Summer should be properly shaded, and prevent rainstorm erosion, timely drainage after rain to ensure neat emergence of seedlings. The technique of cultivating coriander in greenhouse is generally direct seeded from September to October, and once frozen water is irrigated before winter to facilitate the seedlings to survive the winter. Buckle the shed in January and there is no need for ventilation from January to February. When the seedlings turn green, ploughing, loosening the soil and weeding are carried out. When the seedling height was 10 cm, the plant entered the vigorous growth period, and the greenhouse was kept at 15 ℃ to 25 ℃. About 15 kilograms of ammonium sulfate per mu, topdressing 1 to 2 times, can be harvested in advance.