Machine-planting techniques for early rice field cultivation

Since the growth process of the seedlings has its own unique rules, the seedlings transplanted into the fields before and after planting need to be scientifically operated by the farmers, and cultivated and managed scientifically according to the characteristics of seedling development. As our province is a grain-producing province that mainly produces double-season rice, its machine-planting field cultivation techniques can be divided into the techniques of field-planting early-season rice cultivation and machine-planting late-season rice cultivation techniques. The following mainly describes the technical points of machine plugging early rice cultivation:

I. Preparation for Daejeon

1, soil preparation fertilization. Before transplanting, the fields must be well-distributed, the basal fertilizer must be reused, and organic fertilizer should be added. Combining tillage, total 70-80 percent of total nitrogen fertilizer, total phosphate fertilizer, and about 2-3 percent of the total amount of potash fertilizer are applied as base fertilizer. Daejeon needs to be fine and flat, with a high level of strength and a moderate level of topsoil. In order to improve the utilization of fertilizers in Daejeon, Daejeon's tillage should adopt the methods of dry farming, chemical fertilizer application and water leveling. Green fertilization field applies 500 kilograms of livestock manure per acre, and no green fertilization field (free field) applies 1,000 kilograms of livestock manure per acre. At the same time, it uses 40 kg of ammonium bicarbonate or 10 to 12 kg of urea, and 30 kg of superphosphate per acre. Chlorination Potash 5 kg for fertilizer application. Such as using water and water, the time should not be too deep for farming, or the bad feet will make the rice transplanter sink deeper, which will increase the running resistance and difficulty of the implements. At the same time, when the transplanter is running, the mud will be serious, causing the seedlings to fall easily. Therefore, the general sandy field is a solid one day, and the sticky soil field should be immersed for 2-3 days, and then the thin water machine should be inserted.

2, thin water machine inserted: 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 must be kept in a thin layer of water. If the surface water is too deep, it will not only affect the machine insertion depth, increase the amount of rakes, but also increase the number of seedlings that will be planted when the rice transplanter is operating. Floating. The quality of machine insertion is an important link to determine the level of output, and it is also the potential to seize the opportunity of high-yield machines. Machine insert quality to achieve the appropriate density, tree plant uniform, low rate of injury, lack of trees, less leeches, not down seedlings, not muddy. General requirements Mu insert 1.4 to 18,000 points, hybrid rice 1-3 grain seedlings per hole, its planting specifications are generally 3011.6 ~ 14.7 cm, plant spacing can be adjusted according to the uniformity of seedlings. Machine insertion depth is generally about 1.5 cm.

Second, water slurry management

1, the principle of water management: thin water planting, light exposed live trees, shallow moisture pods, ahead of the open field, thin water heading, alternating wet and dry to wet mainly to maturity.

2. Method of water management: using thin dew irrigation, mainly using dew, prompting the roots to be tied down, shallow water planting, allowing them to dry naturally for 3 to 4 days and then rewatering. The water depth is the degree of cover mud, when the total stem is seedlings. When the target number of panicles is 80%, the dehydration is started and graded, the ineffective control of tillers is performed, the conditions for ventilation and light transmission are improved, the quality of the population is improved, and the low-level tiller becomes a large panicle.

Third, fertilizer management

1, in fertilizer management, re-supply basic fertilizer, apply less or no fertilizer, increase ear fertilizer. In the fertilizer mix, increase organic fertilizer, combined application of nitrogen, phosphorus and potassium, nitrogen fertilizer 70-80% as base fertilizer, 20-30% as top-dressing, organic fertilizer and phosphate fertilizer as base fertilizer, potassium fertilizer 2 to 3 as base fertilizer, 1 to 3 top dressing.

2, suitable for sub-fertilizer. When the base fertilizer is insufficient, 7 kg of urea and 5 kg of potassium chloride are used as the tiller fertilizer in 7 days after planting.

3, top pan ear fertilizer. According to the second stage, the leaves from the second to the fifth leaves are the stage of spikelet degeneration. Therefore, the top-dressing (fertilizing) fertilizer has the best effect when it is poured on the third leaf (the spike differentiation begins at the beginning of the fourth period). In general, urea and potassium chloride are applied in 3 to 5 kg per mu. Before fertilizing, dry the soil to make the soil moisture unsatisfactory. After fertilizing, slowly pour thin water and use water to fertilize the soil.

4, make-up fertilizer. After the panicle can be topdressed once a grain of fertilizer, acres of urea, potassium chloride 0.5 kg, 150 kg of potassium dihydrogen phosphate spray 50 kg of water.

IV. Pest control

Before transplanting, use 20% tricyclazole 750 times liquid spray on the boring bed, or 40% per acre with a net emulsion of 100 ml plus 75% WP WP 60 g of water plus 30 kg spray to achieve drug transfer After planting and transplanting the field, it is necessary to timely and accurately control pests and diseases, especially the prevention and control of rice blast, sheath blight, and stem borer, so as to achieve the purpose of reducing the production cost and increasing the yield.

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