Rice Seedling raising and Seedling stage Management

In order to improve the germination rate of rice, seed treatment should dry the seeds before sowing, then use 100g (25% prochloraz) 2ml or Yexianqing (16% prochloraz) 15g, add water 5kg 6kg soak 5kg rice seeds, add 10g 10% imidacloprid wettable powder in 5kg water, soak for 72 hours, soak day and night dew, and then accelerate germination and sow, which can effectively control evil seedling disease, dry tip nematode disease and early gray planthopper. Water management dry seedlings should be watered once in time to prevent the seedlings from dying before the 3-leaf stage, keep the seedlings moist before the 3-leaf stage, promote the rapid growth of roots and leaves, and mainly control the water and dry tube after the 3-leaf stage, so that the leaves should not be rolled and watered. Rain stops the field to dry on rainy days. Do not keep the deep water layer for a long time in raising seedlings with water. The amount of fertilizer needed in the seedling stage of dry raising seedlings is relatively small, and under the condition of full fertilization of the seedling bed, topdressing is generally not needed at the seedling stage, but in the seedling fields with poor fertilization, insufficient base fertilizer and yellowing, it is necessary to apply available nitrogen fertilizer in time. 10-20 kg urea per mu, and timely watering to prevent fertilizer damage. The amount of fertilizer needed in the seedling stage of water-raised seedlings is relatively large, and the amount of topdressing is more, so it is required to spread a small amount evenly for many times to prevent seedling burning. Before falling valley, 48% chlorpyrifos EC 150 ml and 35% phoxim microcapsule granules 1 kg per mu were sprinkled before soil preparation, and then 100 grams of 40% phoxim EC was used to spread bait around the seedling field in the evening to control underground pests. To control bacterial wilt and bacterial wilt after finishing seedlings, one of the following two formulations per mu of seedling field was selected and sprayed with water of 50kg / mu. Weeding in the seedling field can be done from 2 leaves to 1 heart stage to 4 leaf stage, using benzyl dichloride (32% benzosulfuron ·dichloroquinolinic acid) 30g / mu and spraying water 30kg / mu. Drain the water before application, put it on 2-5 cm water layer 1-2 days after application, and keep it for 5-7 days. To control diseases and pests, you can use 25% imidacloprid wettable powder 40 grams plus 250 milliliters or Jiajie (50% chlorobromoisocyanuric acid) 30 grams plus Sanfushun (6% albendazole ·carbendazim) 100 grams per mu, add water 50 grams 75 kg spray, once every 5 days.