How to grow cilantro well in summer?

How to grow coriander in summer? Please give guidance to plant coriander in summer can refer to the following methods: 1. Variety selection Select heat-resistant, late bolting, fast-growing varieties, such as Beijing coriander, North China big leaves, etc. 2. Land preparation and fertilization should select fertile soil, good water and fertilizer retention performance, good irrigation in drought and drainage in flood, good permeability, and no coriander planted for more than 5 years. 4000 kg of decomposed farm manure and 100 kg of cake fertilizer shall be applied per 667 square meters (1 mu). Previous crop residues should be removed to reduce the occurrence of pests and diseases. Deep ploughing and fine harrowing, making ridges, 1~1.5 meters wide and 8~10 meters long is appropriate. 3. Seed soaking germination summer planting coriander sowing period requirements are not strict, generally 5~6 months sowing, 40~50 days after sowing harvest. Soak seeds before sowing, so as to ensure that the emergence of Qi, emergence fast. Germination method: first soak seeds with clean water for 24~30 hours, take them out and spread them on wet and pollution-free sacks, 2~3 cm thick, covered with wet sacks. When the temperature is 20~25℃, stir 1~2 times a day to keep the seeds with a certain amount of water, and sprout and sow after 3~4 days. 4. It is better to sow and protect seedlings in summer. After sowing, seedlings can cover the surface of the bed, reduce water evaporation and reduce the temperature between the surfaces. The method of sowing is "sow two rows first and leave one row". Put the covering soil of the first sowing bed on the reserved bed surface on both sides, then irrigate enough water, sow evenly after water infiltration, cover the soil by 2 cm, and then sow the empty bed left, the method is the same as that of the first sowing. About 2 kg of seed is used per 667 square meters. After all sowing, a suppression is carried out to preserve moisture. If the weather is dry and the soil humidity is small, it will affect the emergence of seedlings, and small water can be irrigated once. 5. Thinning and weeding shall be carried out when the seedling height of field management is 4~5 cm, so as to ensure that the seedling spacing is 2~4 cm. Thinning seedlings combined with irrigation after a thin manure water. When the seedling height is 7~8 cm, the first fertilizer is applied. At this time, the amount of fertilizer should be large, and 20~30 kg ammonium sulfate should be applied per 667 square meters. Keep the soil moist, irrigate every 4~5 days, and take shade to cool down. Summer coriander can be combined with thinning seedlings, harvest in batches. Click for more cilantro growing techniques Click for more vegetable growing techniques