Rice is one of the main food crops in China, and its planting area and output rank among the top in the world. In the process of rice planting, seedling raising is an important link, which directly affects the growth and yield of rice. This article will give you a detailed introduction to the whole process of rice seedling.
1. Seed selection and soaking.
Seed selection: Select healthy, pest-free rice seeds for planting. The seeds should be ripe, plump, brightly colored, and have a high germination rate.
Soaking: Soak the selected rice seeds in water to soften the seed coat and promote the seed absorption and expansion. In general, the soaking time of rice seeds is 24-48 hours, and the water temperature is maintained at 20-30 degrees Celsius.
2. Germination and sowing.
Germination: Remove the soaked rice seeds, drain the water, and then put them in a moist gauze bag or plastic pot for germination. Maintain proper temperature and humidity during germination to facilitate seed germination. In general, the germination temperature of rice seeds is 25-30 degrees Celsius and the humidity is 60-70%.
Sowing: During germination, when most of the seeds break out and are white, they can be sown. When sowing, it is necessary to pay attention to maintaining appropriate row spacing and plant spacing, so as not to affect the growth space of rice. In general, the row spacing of rice is 15-20 cm, and the plant spacing is 5-10 cm.
3. Management and maintenance.
Watering: After rice sowing, it is necessary to water in time to ensure that the seeds are in close contact with the soil and promote the seeds to absorb water and swell. During the growth process, it is necessary to water at the right time according to the weather and soil moisture conditions to keep the soil moist.
Weeding: In the early stage of rice growth, it is susceptible to competition and damage from weeds. Therefore, weeding should be carried out regularly to maintain the growth advantage of rice.
Fertilization: During the growth of rice, there is a greater demand for fertilizer. In the early stage of growth, an appropriate amount of organic fertilizer, such as compost, green manure, etc., can be applied to increase soil fertility. At the tillering stage and heading stage, nitrogen, phosphorus, potassium and other chemical fertilizers can also be applied in a timely manner to ensure the growth demand of rice.
Pest control: In the process of growth, rice is susceptible to pests and diseases, such as rice blast, rice leaf roller, etc. It is necessary to strengthen the monitoring and early warning of pests and diseases, and take timely measures to prevent and control pests and diseases when signs of pests and diseases are discovered. It can be controlled by a combination of biological control, chemical control and other methods.
4. Transplanting and management.
Transplanting: When rice seedlings grow to a certain height and number, transplanting can be carried out. When transplanting, care should be taken to protect the root system and avoid damage. After transplanting, it is necessary to water in time to ensure the smooth survival of rice seedlings in the new environment.
Management: For a period of time after transplanting, the management of rice should be strengthened, including watering, weeding, fertilization, etc. At the same time, it is necessary to pay close attention to the growth of rice, and discover and solve possible problems in a timely manner.