What are the four key points of rice seedling raising techniques? What materials are needed for the formula of rice seedling soil

Now rice is our most important food. It is our staple food. How much do you know about rice planting methods? Let's take a look at the rice seedling method first!

seedling raising method

1. bed soil

Compost one portion of sawdust (each box weighs about 520 grams, 125 kg/ha), plus one portion of crushed chaff (each box weighs about 150 grams, 36 kilograms per hectare), add a portion of soil (each box weighs about 800 grams, 192 kilograms per hectare), that is, 1:1 capacity ratio as seedling materials, the mixing method is carried out by mixing mixer, or a portion of sawdust compost and a portion of crushed chaff are evenly spread on the upper layer of the mound, and then the tractor is driven into the soil to mix. Finally, the electric crushing and screening dual-purpose machine is used to screen, and uniform seedbed soil can be obtained. Cover with crushed chaff and soil (1:1). The total amount of soil used was 264 kg/ha with 300 g soil cover per box. Compared with the current 432 kg soil used for rice husk mixed soil seedling, the total amount of soil used was 168 kg/ha (38.9%).

2. fertilizer and pesticide mixture

Before and after sowing, 600 c. c. of mixed solution of 25% EDL emulsion 1000 times +35% Bendale WP 2000 times + Taifei 1 instant fertilizer 100~120 times was applied to each box. (Spraying 400 C. C. per box before sowing, After sowing, spray 200 C. C.) per box.

3. sowing

Sowing 280g wet germinating seeds per box in the first stage, sowing 250g wet germinating seeds in the second stage, spraying fertilizer and chemical mixture after sowing, spraying 200c. c on seeds per box and covering soil, it is better to see no seeds.

4. Accumulation

After covering soil, the seedling boxes shall be stacked immediately for the purpose of keeping warm and promoting the germination of all boxes uniformly. The stacking height of each stack shall be 20~25 boxes. A box of seedling boxes filled with soil and not sown shall be placed at the top to prevent sunlight exposure. The first phase is accumulated in outdoor places where wind and sun are sheltered, covered with plastic cloth for heat preservation and moisture retention, and accumulated for 2~3 days. The second phase should be accumulated indoors or in a cool and ventilated place. There is no need to keep warm. Each stack should be separated by 5 cm to allow air circulation to prevent the temperature from rising too high. The accumulation time is 1~2 days. When the white buds extend about one centimeter, that is, when the buds reach the bottom of the box, they can be transferred to the seedling bed, so that the seedlings continue to grow green.

5. Seedling greening, heat preservation, irrigation and drainage management are the same as those of rice husk mixed soil seedling method.