Method for directly sowing and cultivating paddy rice in winter paddies in hilly mountain areas

A technology of hilly and mountainous area and cultivation method, applied in the field of direct seeding cultivation of rice, can solve the problems of limited self-regulation ability of individual and group seedlings, stable and high yield of difficult-to-seek rice, affecting the seedling rate of seeds, etc., so as to reduce the occurrence of diseases and insect pests and the risk of lodging. , Improve the ability of ventilation and light transmission, which is conducive to the effect of germination

Inactive Publication Date: 2015-08-05
CHONGQING ACAD OF AGRI SCI
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

At this stage, the utilization of winter paddy fields is facing the following outstanding problems, which seriously affect rice production
First, it is difficult to realize mechanization. The traditional method of rice seedling cultivation and transplanting is quite labor-intensive, and the phenomenon of rice field abandonment is prominent; Due to the special ecological function of winter paddy fields, it is difficult to drain the surface water to facilitate the germination of rice seeds, which seriously affects the seedling rate; at the same time, due to the limited self-regulation ability of individual and group seedlings, this common direct seeding in the field is disorderly distributed. The rice panicle rate is often low, and it is difficult to achieve stable and high yield of direct-seeding rice

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] From 2011 to 2012, the inventor of the present invention carried out a direct-seeding test of rice strips in the same test field for 2 consecutive years at the Yuxi Crop Experiment Station of Chongqing Academy of Agricultural Sciences, Nanhua Village, Weixinghu Street, Yongchuan District, Chongqing City. Two factors, the row spacing of direct seeding and the amount of dry grain seed, were studied in the experiment. Among them, the row spacing of live broadcast is set at 3 levels: 30cm, 40cm and 60cm; the amount of dry grain seed is set at 1.0kg / 666.7m 2 、1.5kg / 666.7m 2 and 2kg / 666.7m 2 3 levels; the comparison is the existing disorderly direct seeding technology, and the amount of dry grain seed used is 1.0kg / 666.7m 2 . Except for the control treatment, the rest of the experimental treatments used semi-dry chambers for water management. Each test plot is 1.2m wide and 11m long, with a net area of ​​13.2m 2 , the tested variety was 'Yuxiang 203', the sowing date was...

Embodiment 2

[0044] In 2013, in Nanhua Village, Weixinghu Street, Yongchuan District, Chongqing, farmer Tang Cilie carried out a comparison demonstration of rice strips direct seeding and disorderly direct seeding in the same field. The demonstration field is a winter paddy field with an area of ​​5 mu. The rice variety is 'Yuxiang 203', and the sowing date is April 8. The live-seeding of rice strips is implemented strictly according to the technical scheme of the present invention. The rice yield and yield composition of the demonstration field are shown in Table 2. The result of comparison and demonstration in the same field shows that after adopting the cultivation method of the present invention, the effective panicle number of direct-seeding rice can not be increased, and it is also beneficial to realize large panicle and high yield.

[0045] Table 2 Yield and yield composition of rice strip direct-seeding comparison demonstration in the same field

[0046]

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Abstract

The invention discloses a method for directly sowing and cultivating paddy rice in winter paddies in hilly mountain areas. Middle maturing grain-ear-balancing types with strong stems, relative low stem height and low-temperature-resistant seedling stage are selected, and water management for the winter paddies is carried out in semi-drought compartment way. Seeds are soaked and dressed with a drought-foster nurse seed-dressing agent, and are sowed along a linear-bar shape to the compartment surfaces of the flattened paddies. The method changes original disordered rice sowing into ordered sowing, a conventional natural irrigation is changed into semi-drought compartment water management, and a common seed processing is changed into dressing with a seed dressing agent. The labor intensity of paddy rice transplanting can be substantially lowered, per unit yield of directly sowed paddy rice is increased substantially, and a simple, highly-effective and water-saving way of producing paddy rice in winter paddies in hilly mountain areas can be realized.

Description

technical field [0001] The invention belongs to the technical field of rice planting, and in particular relates to a rice direct seeding cultivation method used in winter paddy fields in hilly areas. Background technique [0002] In the hilly and mountainous areas of our country, especially the southwestern hilly and mountainous areas represented by Chongqing and Sichuan, due to the complex natural and geographical conditions, the farmland in most areas lacks water conservancy projects and supporting irrigation conditions, and the distribution of natural precipitation in space and time is seriously uneven. Rice production in the region has long faced the threat of drought. In order to solve the unfavorable climate with frequent droughts in the region, people generally use rice fields to store water in winter to ensure the normal sowing and production of rice in the following year. After a long period of development, the winter paddy field-rice farming system with the charac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G16/00A01G22/22
Inventor 姚雄李经勇唐永群
Owner CHONGQING ACAD OF AGRI SCI
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