Science Management Water The survival time of transplanting should be 3-4 cm in the field water layer, so that the field will form a relatively reasonable insulation and moisturizing environment, promote the emergence of new roots, and quickly return to green live trees. After returning green, the seedlings enter the tillering stage and should be irrigated with shallow water, generally maintaining a 2-3 cm water layer. When the rice tillers reach the number of tillers required for the expected yield, the field should be drained. Sundry has the effect of inhibiting soil nutrients first and then promoting them. It has a good effect on the control of rice populations, the promotion of vegetative growth from rice to reproductive growth, and the cultivation of large ear and multiple grains. Sun Tian generally grasps clay fields, low-level fields, and heavy fields. Sandy fields and thin fields are light in the sun. The sun usually spreads to small cracks in the field, the foot does not fall, the leaf color fades, and the leaves stand upright. This will control the production of invalid labor and increase resistance to lodging and resistance to pests and diseases. Early application of fertilizer After rice returns to green, the amount of fertilizer needed gradually increases. At this time, the root system is mostly distributed in the topsoil and the supply of nutrients is insufficient. The tiller fertilizer should be applied in time. Generally, 4-5 kg ​​of urea is applied to the mu and spread evenly to keep the shallow water layer. Fertilizer should be used to control the fertilization field and thin fields. Fertilization method: The first is to apply fertilizer early. It is generally applied immediately after returning green. The second is to see seedling fertilizer. If there is a good situation, it will be less applied. Only in this way can all fields reach the same level. After fertilization, the field must have a water layer and it must not be drained, and it should be drained naturally after being dried. Pest Control The main diseases are leaf blight and sheath blight. The prevention and treatment of leafhoppers. In the early stage of leaf blasting, mu with 75% tricyclazole 30 grams or 40% of Fuji No. 1 EC 100 ml, plus 40-50 kg of water evenly sprayed. Control of sheath blight. At the end of labor, when the incidence rate reaches more than 5%, 5 grams of Jinggangmycin wettable powder or 25% of triadimefon wettable powder 50 grams of water plus 40-50 kilograms of water is sprayed per acre, and the middle and lower leaves of rice are sprayed. The main insect pests are rice borers and rice planthoppers. The control of rice aphids. The appropriate period for prevention and control is the period of childbirth, and when the pest rate reaches 1% or more, medication is used for prevention and treatment. Control methods: Each mu can choose 20% triazophos EC 100 ml or 90% crystal trichlorfon 200 g, 25% insecticidal water 200 ml, 80% insecticide 50 g, add water 40-50 kg spray. Prevention of rice planthoppers. When the larvae reach 50 or more, the medicine should be used for prevention and treatment. Each mus of 10% imidacloprid wettable powder 30 grams or 80% dichlorvos 100 ml, 25% buprofezin 20 grams plus water 40-50 kg spray. Food Vacuum Sealers,Vacuum Sealer Bags,Vacuum Sealer Machine Ningbo Shuangtuo International Trade Co., Ltd. , https://www.nbst-sports.com
The tillering period of rice is the key period for determining effective delivery, and it is the basis for obtaining high yield. The focus of management technology is to take effective measures to ensure the whole seedlings and strong seedlings based on different varieties and soil quality. In the early period, “promoting†was the main factor, and the effective delivery in the early period was promoted. In the later period of delivery, the “control†was the main control, and the control of invalid delivery led to an increase in the percentage of spikes and ensure that the panicle was larger in size.