The planting methods of Four Seasons coriander mainly include land selection and preparation, sowing, field management, etc. The following will introduce in detail: 1. Land selection and preparation
1. Soil selection: Cilantro does not have strict requirements for soil, but it is better to cultivate it in sandy loam soil with good water and fertilizer retention properties. The soil should be fertile, moist, and have strong nutrient retention ability, and have a good drainage and irrigation system.
2. Soil preparation and fertilization: Before sowing, the land should be deeply plowed and thoroughly fertilized with sufficient base fertilizer. Base fertilizer is generally composed of farmyard manure and organic fertilizer, with a recommended application of 1500~2000 kilograms of decomposed organic fertilizer, 10 kilograms of superphosphate, and 5 kilograms of compound fertilizer per acre. After fertilization, it is necessary to plow 2 to 3 times to mix the soil and fertilizer evenly. 2、 Sowing seeds
1. Seed treatment: Cilantro seeds are relatively hard. Before sowing, the outer skin of the seeds should be rubbed off and then soaked in water for one or two days. Afterwards, wrap the seeds in a damp cotton cloth and place them in a suitable environment for germination. After about seven to ten days, the buds will sprout completely.
2. Sowing method: Sowing can be done by sowing or strip sowing. When sowing, the seeds should be evenly spread on the well prepared soil, and then gently covered with a layer of fine soil, with a thickness of about 1-2 centimeters. When sowing in strips, it is necessary to control the spacing between strips and holes. Generally, the spacing between strips and holes is 25 × 20 centimeters, and 4 to 5 seeds are sown per hole. After sowing, it is necessary to keep the soil moist to promote seed germination.
3. Sowing time: Cilantro can be planted all year round, but the best planting time is from March to September in spring, especially in March and April in spring and September in autumn. At this time, the temperature is suitable for the growth and development of coriander. 3、 Field management
1. Water management: Cilantro is sensitive to both drought and flooding, so it needs to be watered or drained in a timely manner according to weather and soil conditions. In the early stages of growth, it is necessary to keep the soil moist but avoid waterlogging. After entering the vigorous growth period, it is necessary to increase the frequency of watering to ensure soil moisture.
2. Fertilization management: During the growth process of coriander, timely fertilization should be applied according to the soil nutrient situation and plant growth status. Generally speaking, if sufficient basal fertilizer is applied, there is no need for additional topdressing during the growth period. But if soil nutrients are found to be insufficient, it is necessary to promptly apply fertilizers such as urea and phosphate fertilizers. When fertilizing, watering should be combined to promote fertilizer absorption.
3. Disease and pest control: Cilantro generally has fewer diseases, but attention should be paid to pest control. A combination of physical control, biological control, and chemical control methods can be used. For example, using yellow boards to lure and kill pests such as aphids; Or spray pesticides such as methomyl salt and food suspension for chemical control.
4. Inter seeding and harvesting: When coriander seedlings grow to a certain height, inter seeding is necessary to ensure ventilation and light transmission between plants. During harvesting, specialized forks can be used to avoid damaging the plants. Generally, coriander can be harvested when it reaches a height of 15-20 centimeters and can be harvested in batches.
By carefully managing the above steps, high-quality and high-yield cilantro can be achieved throughout the four seasons. During the planting process, it is necessary to flexibly adjust management measures according to local climate conditions, soil conditions, and other factors.