Because the growth process of the seedlings has its own unique rules, the seedlings inserted into the field need to be scientifically operated by the farmers before and after planting in the field, and cultivated and scientifically managed according to the characteristics of seedling development. Since our province is a grain production province that mainly produces double-season rice, its machine-planting field cultivation techniques can be divided into machine-planting early rice field cultivation techniques and machine-planting late rice field cultivation techniques. The following mainly describes the technical points of the early rice cultivation techniques:
First, the preparation of Daejeon Linyi Fertilizer Network Copyright
1. Soil preparation and fertilization. Before transplanting, it is necessary to rectify the field, re-apply the base fertilizer and increase the application of organic fertilizer. Combined with tillage, the total amount of nitrogen fertilizer is 70-80%, the total amount of phosphate fertilizer, and about 2/3 of the total amount of potassium fertilizer are applied as the base fertilizer. Daejeon has to be fine and level, but the height is not too high, and the topsoil is moderately soft. In order to improve the fertilizer utilization rate in the field, the cultivation of the field should adopt the methods of dry cultivation, dry application of fertilizer and water level. Green fertilization field applies 500 kg of animal manure per mu, no green fertilizer field (winter leisure field), 1000 kg of animal manure per acre, and 40 kg of ammonium bicarbonate or 10-12 kg of urea per acre, 30 kg of superphosphate, chlorination Potassium 5 kg was applied as a noodle fertilizer. If the use of water tillage water, the time should not be too deep, otherwise the field foot is rotten, so that the transplanter sinks deeper, increasing the resistance and difficulty of the machine. At the same time, the mud is severe when the rice transplanter is running, which makes it easy to pour seedlings. Therefore, in general, the sandy field is solid for one day, and the sticky soil field should be solidified for 2-3 days, and then the thin water machine is inserted. Linyi Fertilizer Network Copyright
2, thin water machine plug: generally about 20 days of age is appropriate, seedlings 3.5 leaves can be transplanted. When the machine is inserted, the surface of the field should be kept thin, such as the surface water is too deep, which not only affects the depth of the machine insertion, increases the drifting, but also causes the wave head when the rice transplanter is running, impacts the seedlings that have been planted, and increases the side seedlings and Drifting. The quality of machine insertion is an important part of determining the level of production, and it is also the potential to capture high output. The quality of the machine insertion should be suitable for the density, the plant is even, the injury rate is low, the lack of trees is less, the drift is less, the seedlings are not poured, and the mud is not muddy. Generally, it is required to insert 1.4-1.8 million holes in the acre, and 1-3 grain seedlings per hole in the hybrid rice. The planting inserting size is generally 30×11.6-14.7 cm, and the plant spacing can be adjusted according to the uniformity of the seedlings. The depth of the machine insertion is generally about 1.5 cm. Linyi Fertilizer Network Copyright
Second, water slurry management Linyi fertilizer network copyright
1, the principle of water management: thin water planting, light live tree, shallow water sputum, ahead of the field, thin water heading, dry and wet alternately wet to mature. Linyi Fertilizer Network Copyright
2, pipe water method: the use of thin dew irrigation, mainly exposed, promote the roots under the tie, shallow water planting, let it naturally dry 3-4 days after rehydration, water depth to cover the mud, when the total stem 蘖 seedlings When the target is 80% of the number of panicles, the dehydration is divided into lightly rested fields, the control is not effective, the ventilation and light transmission conditions are improved, the mass of the group is improved, and the low position is divided into large ears. Linyi Fertilizer Network Copyright
Third, the fertilizer operation and management Linyi Fertilizer Network Copyright
1. In the fertilizer management, re-apply the base fertilizer, apply less or no fertilizer, and increase the application of spike fertilizer. In the combination of fertilizers, organic fertilizer, NPK combined application, nitrogen fertilizer 70-80% for base fertilizer, 20-30% for topdressing, organic fertilizer and phosphate fertilizer for all base fertilizer, potash fertilizer 2/3 for base fertilizer, 1/3 top dressing. Linyi Fertilizer Network Copyright
2, suitable for the application of fertilizer. When the bottom fertilizer is insufficient, 5 kg of urea and potassium chloride will be combined with the weeding in the 7 days after planting. Linyi Fertilizer Network Copyright
3, chasing the ear fertilizer. According to the inverted leaves of the second leaf to the full extension of the flag leaf, it is the stage of the degradation of the floret. Therefore, the effect of applying the panicle fertilizer (promoting the flower fertilizer) to the inverted 3 leaves is the best (the young panicle differentiates into the beginning of the 4th stage). Generally, 3-5 kg ​​of urea and potassium chloride are applied per mu. Before fertilization, the soil is firstly dried to make the soil moisture to an unsaturated state. After fertilization, the water is slowly poured into the soil, and the water is fertilized into the soil. Linyi Fertilizer Network Copyright
4, supplement the application of granular fertilizer. After the heading, the grain fertilizer can be applied once. The urea and potassium chloride are 0.5 kg each, and the potassium dihydrogen phosphate 150 g is sprayed on 50 kg of water. Linyi Fertilizer Network Copyright
Fourth, pest control Linyi Fertilizer Network Copyright
Spraying the boring machine with 20% tricyclazole 750 times before transplanting, or using 40% germination of 100% emulsifiable oil per acre plus 75% å¯ å¯ å¯ å¯ 60 60 60 60 60 kg After planting and transplanting the field, it is necessary to timely and accurately control pests and diseases, especially rice blast, sheath blight and stem borer, in order to reduce the production cost and increase the yield. Linyi Fertilizer Network Copyright
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