1 choose a good bed
Choose a flat terrain, sunny leeward, free dry land or land for convenient management of water sources for seedbeds.
2 Choose and grow bed soil
Sandy loam soil with fertile soil, loose air permeability and good drainage is used as bed soil. In the late fall or early winter, high quality pig manure water 20~30kg and superphosphate 150~200g are applied per bed of bed soil. The soil is re-fertilized and then soiled in order. The application is divided into 3 times. It is required that the bed soil and the fertilizer should be fully mixed in order to be ready for use in the following year.
3 Do a good seedbed and drainage (water storage) pool
The seedbed is made into a trapezoidal underground type, with a bed bottom width of 133cm, a width of 150cm, and a depth of 30cm. For favorable drainage, the bottom of the bed is slightly inclined in the direction of the drainage (water storage) pool. The drainage (water storage) pool is built on the seedbed, about 50cm from the seedbed, 100cm deep, and the size varies, depending on the size of the seedbed, but it is necessary to ensure that the water energy in the seedbed is discharged, the seedbed and the drainage Water) The pool should be connected with a width of about 33cm and used for water storage in the seedbed. After the seedbeds and drainage (water storage) ponds are completed, the seedbeds and drainage (water storage) ponds are also covered with agricultural film or plastic film.
4 good bed soil
Before going to bed, it is required to apply 30~50g urea and 30~40g sulphate to every square meter of bed soil. After fertilization, the soil will be mixed evenly and then spread into the bed, requiring the bed surface to be approximately 7~10cm below the edge of the bed. . Bed soil thickness of 20 ~ 24cm, and in the bed soil surface that is around the edge of the car to open a small ditch for irrigation, so that it can achieve energy storage row.
5 irrigation dipping soil
Three days before sowing, the ditch between the seedbed and the drainage (water storage) pool was plugged with soil and made bedside, and then the seedbed was filled with water soaked soil for 2 to 3 days for use.
6 broadcast good species
Before sowing, the water in the seedbed can be drained for seeding. The amount of seeding can be determined according to the length of age. For example, about 40 days of the seedling age, 40g can be sowed per square meter. After sowing seeds, cover them with fine sandy soil, and the thickness is 0.5-1.0cm. Finally, the bed of the nursery is covered with a bed mask and a frame membrane (ie, a double-layer membrane) to achieve the purpose of heat insulation and cold-proof.
7 seedbed management
After planting to the green stage of the needle, the focus is on heat preservation, moisturizing, root-promoting buds, and the requirement that the car's surface is not white and that no water accumulates in the bed. Bed soil is always wet. In the valley bud began to appear when the needle is green. The bed sheet should be peeled off in time to leave only the film on the shelf, but the temperature in the bed must not exceed 35°C. When the temperature is too high, it should be immediately ventilated and cooled. If the seedbed is dry, immediate rehydration measures should be taken. After the needle is in the green period, the nursery bed is managed with irrigation water or shallow water layer, and the bed temperature is controlled at about 20°C. When the seedlings grow to the 3-leaf stage, they must be promoted according to the application amount of base fertilizer and the seedlings to promote glutinous fertilizer, and the glutinous fertilizer should be promoted by dilute treatment and frequent meals. 2~3 days before planting, with 18% of insecticidal water-repellent agent 200ml per mu, 30~45kg of water is sprayed to control rice borers, and 75% of trichlormazole WP can be used (Fengdeng) 35 to 40g of water to 45~60kg of water. Spraying to control rice blast.
8 Precautions
First, it is forbidden to use alkaline fertilizers such as grass ash, and the pH of the bed soil should be kept in the range of 6.5 to 7.0. Second, the occurrence of fertilizer damage should be avoided. Large fertilizers and fertilizers should be prohibited. Fertilizer should be applied sparingly; the third is to prevent high-temperature burning of seedlings. When the temperature outside the bed is high, it is necessary to uncover the film in a timely manner. Rice plastic film water-saving technology not only makes full use of the insulation effect of plastic film, but also makes full use of the water-retaining characteristics of plastic film. By using this feature, it saves a lot of water for breeding, and it is also beneficial to the regulation of water and fertilizer. It is conducive to cultivating a large number of people, with low cost and simple technology. It is very suitable for large-scale promotion in rice planting areas.
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