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High-light-transmittance simplified cultivation method for hybrid japonica rice

A technology for hybrid japonica rice and a cultivation method, which is applied in the field of hybrid japonica rice with high light transmittance and light simplification, can solve the problems of insignificant yield advantage and low efficiency of hybrid japonica rice, and achieve the effects of improving the tillering ability of a single plant, avoiding premature aging and developing a root system.

Inactive Publication Date: 2020-08-21
辽宁省水稻研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned technical problems, a simplified cultivation method for hybrid japonica rice with high light transmittance and light weight is provided to solve the problems of unobvious yield advantage and low efficiency in the existing production of hybrid japonica rice

Method used

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  • High-light-transmittance simplified cultivation method for hybrid japonica rice
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  • High-light-transmittance simplified cultivation method for hybrid japonica rice

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Embodiment 1

[0024] Embodiment 1: the present invention provides a kind of hybrid japonica rice high light transmittance light simplified cultivation method, comprises the following steps:

[0025] Step 1: Soil preparation. Before transplanting, sprinkle the base fertilizer on the original stubble of the paddy field and soak the field with water. After 24 hours or a little longer, the depth of the water layer in the field reaches the level of 3cm-4cm in the field. Use a rotary tiller for rotary tillage. Break up the soil clods and rice stubble, then use a walking tractor to harrow the ground, and pull the board to level it.

[0026] Step 2: Variety selection. In this example, the variety selection makes full use of the variety characteristics, and selects a combination of hybrid japonica rice that can be safely matured locally and has a strong edge row advantage, so as to improve the yield advantage of hybrid japonica rice.

[0027] In 2019, research on the marginal effects of different va...

Embodiment 2

[0044] Embodiment 2: what this example is different from embodiment 1 is: in this example cultivation method:

[0045] For sowing, choose the variety with a thousand-grain weight less than 24g, sow about 100g of dry seeds; for varieties greater than 26g, sow 110-120g of dry seeds;

[0046] Seedling transplanting adopts a six-row rice transplanter with a row spacing of 30 cm, and every six rows are empty, and the plant spacing is adjusted to 16 cm. Compared with the commonly used cultivation density of farmers 30cm×18cm, 0.05 million holes per mu are reduced, and the basic seedlings are reduced by 4.0%. Since one row has a significant side row effect, two out of every six rows have a side row effect. The edge row effect index should be above 1.6, such as: Liaoyou 9919, Liaoyou 9906, etc., which can make up for the yield loss caused by the reduction of basic seedlings in theory.

[0047] In this example, 60% of the base fertilizer was applied during soil preparation, 30% of th...

Embodiment 3

[0051] Embodiment 3: The difference between this example and Example 1 is that in this example cultivation method: the described rice transplanting adopts a four-row rice transplanter, the four rows of rice transplanting are vacated and one row is not transplanted, and the plant spacing is adjusted to 14-16cm. Compared with the commonly used cultivation density of farmers, which is 30cm×18cm, the number of holes per mu is reduced by 0.05-0.13 million holes, which is 4.0%-8.1%. Variety edge row effect index should be 1.6-1.7.

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Abstract

The invention discloses a high-light-transmittance simplified cultivation method for hybrid japonica rice, and belongs to the technical field of rice cultivation. The method comprises the following steps of soil preparation: spreading a base fertilizer on original stubbles of a rice field before transplanting, irrigating to soak the field, after 24 hours or more, enabling the depth of a field water layer to be 3-4 cm to reach the field foot sinking degree, and performing rotary tillage, harrowing and pulling plate leveling to achieve the effects of flat field surface, upper pasting and lower loosening, wherein 4000 seeds are sown in each tray; the rice transplanting line spacing is 30cm, one line is reserved between every two lines without rice transplanting, and the plant spacing is adjusted to 14-16cm; performing nitrogen fertilizer management, wherein 60% of base fertilizer is applied during soil preparation, 20% of tillering fertilizer is applied at the n + 2 leaf age, n is the number of rice leaf ages during transplanting, fertilizer is applied at a time, and 20% of earing fertilizer is applied at the 1-2 leaf age; and adopting shallow-wet-dry intermittent water-saving irrigation for water management, wherein water is stopped 7-10 days before harvesting. According to the method, the rice canopy illumination condition is improved, hybrid japonica rice filling and root system development are promoted, banded sclerotial blight is reduced, and the lodging risk is reduced.

Description

technical field [0001] The invention belongs to the technical field of rice cultivation, in particular to a simplified cultivation method for hybrid japonica rice with high light transmission and light weight. Background technique [0002] Rice plays a pivotal role in my country's grain production. The available arable land area in my country is decreasing year by year, and the rice planting area is also decreasing year by year. Therefore, the key to ensuring the total rice output is to increase the output per unit area. Since the yield per unit area of ​​hybrid rice is generally 10% higher than that of conventional rice, the promotion and planting of hybrid rice plays an important role in ensuring the safety of food production. Liaoning is the birthplace of hybrid japonica rice, and has a relatively deep background in the research and development of varieties. However, the cultivation and management methods of conventional rice are mainly used in production, and there is a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/22A01C21/00
CPCA01C21/005A01G22/22
Inventor 陈盈于广星代贵金张满利刘宪平宫殿凯张新
Owner 辽宁省水稻研究所
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