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Cultivation method for increasing yield of mechanically-transplanted rice with long seedling age

A cultivation method and technology for seedling age are applied in the field of cultivation for improving the yield of machine-transplanted rice with long seedling age, and can solve the problems of inability to meet the requirements of high-yield of machine-transplanted rice with long seedling age, and achieve the improvement of tillering ability, grain-filling strength, effective panicle number and high yield. The effect of improving the seed setting rate and increasing the yield

Inactive Publication Date: 2014-07-02
SHANDONG RICE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned cultivation method is more suitable for seedlings of the right age within 25 days, but it cannot meet the high-yield requirements of medium-long seedling-age machine-transplanted rice.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Bed soil management

[0027] Take the paddy field surface soil within a depth of 15cm as the soil for raising seedlings; continuously rotate the land for 2-3 times before taking the soil, every 120m 2 The surface soil (depth 15cm) is diluted 100 times with 150g of Dixon and sprayed directly. Choose sunny weather to sieve, so that the fine soil particle size is between 2 and 4mm; after sieving, mix 0.15kg of nitrogen, phosphorus and potassium (15%-15%-15%) compound fertilizer evenly into every 100kg of fine soil after sieving;

[0028] (2) Seedling stage management

[0029] Put seedling soil (4kg soil, soil depth 2-2.5cm) in the seedling tray (hard disk, the inner cavity of the seedling tray is 58cm×28cm×2.8cm), and sow 150g of sprouts in each tray; When it grows to a height of 0.5cm, the seedling tray is transported to the seedling field for placement;

[0030] Before the 1-leaf-1-heart stage (starting after the seedling field is placed on the tray), the "horse r...

Embodiment 2

[0045] (1) Bed soil management

[0046] Take the paddy field surface soil within a depth of 15cm as the soil for raising seedlings; continuously rotate the land for 3 times, before taking the soil, every 120m 2 Surface soil (depth 15cm) is diluted 110 times with 155g of Dixon and sprayed directly. Choose sunny weather to sieve, so that the fine soil particle size is between 2 and 4mm; after sieving, mix 0.18kg of nitrogen, phosphorus and potassium (15%-15%-15%) compound fertilizer evenly into every 100kg of fine soil after sieving;

[0047] (2) Seedling stage management

[0048] Put seedling soil (4.1kg soil, soil depth 2-2.5cm) in the seedling tray (hard disk, the inner cavity of the seedling tray is 58cm×28cm×2.8cm), and sow 152g of buds in each tray; When the seedling grows to a height of 0.5cm, the seedling tray is transported to the seedling field for placement;

[0049] Before the 1-leaf-1-heart stage (starting after the seedling field is placed on the tray), the "hor...

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Abstract

The invention discloses a cultivation method for increasing yield of mechanically-transplanted rice with long seedling age, and belongs to technical field of rice cultivation. According to the cultivation method, from plate placement of a rice seedling bed to a one-leaf one-core period of seedlings, irrigation is preformed to enable seedling plates to be soaked by water, and water is drained; when soil in the plates dries up, irrigation is performed again to enable the seedling plates to be soaked by the water, and the water is drained; the steps are performed repeatedly. In the one-leaf one-core period, nitrogen-phosphorus-potassium compound fertilizer is applied into the seedling plates, and fertilization is not needed in later period. A wetting-drying alternation method is adopted for water management. 6-7 seedlings are transplanted in each hole during mechanical rice transplantation, and uniconazole is sprayed onto leaves during tillering. In a panicle primordium differentiation stage, liquid silicon fertilizer is used for irrigating roots after being diluted by water, and a silicon solution (prepared by Na2SiO3 9H2O (sodium metasilicate nonahydrate)) is sprayed onto the leaves. By the nutrient and water management mode and the like of the cultivation method, tillering capability and grouting firmness of the mechanically-transplanted rice with the long seedling age are improved greatly, effective ear numbers and actual ear numbers are remarkably increased, and the yield of the mechanically-transplanted rice with the long seedling age is effectively increased.

Description

technical field [0001] The invention relates to a cultivation method for improving the output of machine-transplanted rice with long seedling age, and belongs to the technical field of rice cultivation. Background technique [0002] Machine-transplanted seedlings are different from conventional hand-transplanted seedlings. Due to their high seeding density, the elasticity of seedling age is small, and the requirements for transplanting seedling age are high. Usually, the seedling age is required to be within 25 days. However, in wheat stubble rice areas, due to the harvest time of previous crops and the influence of unfavorable weather factors, the phenomenon of exceeding seedling age is common. Usually, the rice shoots whose seedling age exceeds 30 days are defined as long seedling age seedlings. After transplanting, long-age seedlings not only turn green slowly, but also have weakened tillering ability and slow growth, which eventually leads to a decrease in the effective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G16/00A01G1/00A01G22/22
Inventor 刘奇华吴修高洁陈博聪信彩云马加清尹亮
Owner SHANDONG RICE RES INST
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