First, seedbed selection and finishing Dry nursery beds are required to choose new plots with high topography, smooth drainage, thick soil, fertile and acidic soils, and vegetable plots with a small amount of plant ash and cultivation for 2-3 years. Seedbed cultivation is dominated by organic fertilizer. Fertilize and plow 2-3 times before sowing 20-30 days before sowing. In addition to farmyard fertilizer, generally 40-50 kg of phosphate fertilizer and 15-20 kg of potassium fertilizer are applied. Ditching is carried out 3-4 days before planting. The opening width is about 1.2 meters, and the height is about 10 centimeters. The surface of the car should be smooth and fine, and a good drainage ditch should be opened around. The soil of the Xianggou is finely sieved and placed on the cover soil. In order to make the bed soil play a role in disinfection, acid adjustment and fertilization, on the basis of seedbed fertilization and plowing, the soil covered with common type of strength agent is 2.5kg per bag (covered 12.5kg). Or concentrating Zhuang Ling agent each bag (1.5kg) plus sieving the covered soil 18.5kg, fully mix evenly spread on the surface of 20 square meters of bed soil, repeated scratching, and then pouring bottom water sowing. After sowing, cover the seeds with soil without covering with a strong agent. Second, sowing date The suitable sowing date for mid-season rice is mid-to-late April. Temperature: Before the emergence of the film does not exceed 35 °C, a leaf before the one-heart period does not exceed 25 °C, one leaf one heart to two leaf one heart period to about 20 °C is appropriate. If more than the above temperature should be lifted to provide air cooling film. In the second leaf stage, the seedlings began to grow, and on sunny days, the night cover was opened and the film was removed 3-5 days before transplanting. Water and fertilizer: Generally, no water is poured before the two leaves and one leaf is kept. Only the surface of the leaf is kept moist. Decomposing seedlings needs to be combined with pouring (irrigation) water. Two-leaf cut off milk fat, apply 6-7.5 grams of urea per square meter bed. Pest control: In the second leaf stage, 1 kg of anti-dry fungus or 1000 g of enemy cough is used to prevent litter blight. Long-lasting or weak tiller varieties are sprayed with 150-200ppm paclobutrazol at one leaf and one heart. Third, the appropriate period transplanting Middle rice struggles to plant early. Fourth, fertilization Fertilization requires re-application of basal fertilizer, appropriate topdressing tiller, base fertilizer ratio of 6-7.3-4, make up panicle fertilizer, grain fertilizer. Pipe water: thin water planting hoe, live tree, booting and flowering stage irrigation shallow water, the rest of the time moisturizing. When the number of stems close to the appropriate number of panicles began to dry, dry to the mud does not sink into the foot and field cracking, and then run the water and then sun to the pip. Prevention and control of pests and weeds: weeding or weeding with herbicides 1-2 times in the early stage; in the middle and later stages, we need to strengthen the prevention and control of pests such as rice thrips, aphids, and rice leaffolders, as well as sheath blight and leaf blight. Diatomite Deodorization Desiccant Air Freshener Balls,Diatomite Deodorization Desiccant,Diatomite Desiccant,Diatomite Drying Egg Dongguan Vanilla Bioengineering Co., Ltd. , https://www.healthecigarette.de
Medium rice drought breeding and sparse planting technology