High-yield management techniques and key points of big leaf coriander

The improved varieties are Japanese cilantro, Thai cilantro and Beijing cilantro. Sowing shed cultivation at the right time, sowing can be arranged all the year round, and the sunshade net can be covered for a short time in summer. The open field began to sow in late April and went on the market in late June. Sowing in May, two sweet corn plants were sown in advance at an interval of 1 meter on both sides of the mattress. It can be used to cool the shade of parsley and go on the market in July. It was sown in mid-August and went on sale in November. The average yield of coriander per mu can reach 1800 kg. After soil preparation and fertilization, deep ploughing and drying soil, the width of the border is 1.6 ~ 2 meters. Per mu, 3000 kg of rotten pig manure, 50 kg of ternary compound fertilizer, 20 kg of potassium sulfate and appropriate amount of trace elements boron, zinc, magnesium and iron were turned into the soil and leveled. 2 kg or 3% miler 2 kg of Japanese Yinong Shendan is used to eliminate underground pests. To eliminate underground germs, use 2 kg of 40% soil bacteria in Hainan or 2 kg of Zhengzhou Kim Jong Zhuang Diwang. Sow the seeds 1-2 hours ahead of time and press the seeds with sticks for about 5 minutes. Then soak in water for 20 hours and let the seeds absorb enough oxygen and spread out for half an hour. 1.5 kg per mu for strip sowing and 3 kg for sowing. After sowing, cover the soil with an iron rake, then roll it with a stone roll or step on it with both feet. Irrigate thoroughly, then spray 33% Tianpu 120ml closed weeding. Field management should keep the soil moist and water frequently after sowing. Cilantro needs more water in the peak growth period, applying 6 kg of available nitrogen fertilizer or 10 kg of water fertilizer every 10 days, and increasing the application of phosphorus and potassium fertilizer. In the middle stage, 15 kg of ternary compound fertilizer, 20 kg of superphosphate and 10 kg of potassium sulfate were applied in three times, once every 10 days, combined with watering. When the height of the seedling is about 12 cm, leave one seedling every 3 to 5 centimeters, or a cluster of seedlings every 18 centimeters, with 4 seedlings in each cluster.