Method for controlling rice blast and sheath blight by intercropping sagittaria sagittifolia in rice field

A technology for rice blast and sheath blight, applied in the fields of botanical equipment and methods, rice cultivation, horticulture, etc., can solve the problems of increasing the resistance of bacteria, environmental pollution, pesticide residues, etc., and achieve obvious ecological benefits, easy operation, good control effect

Active Publication Date: 2014-09-03
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to prevent and control diseases, a large amount of pesticide input not only increases the resistance of bacteria, but also brings environmental pollution and pesticide residues in agricultural products.
At present, t...

Method used

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  • Method for controlling rice blast and sheath blight by intercropping sagittaria sagittifolia in rice field
  • Method for controlling rice blast and sheath blight by intercropping sagittaria sagittifolia in rice field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The rice variety selected in this example is Huanghuazhan (Yueshendao 2005010), and the arrowroot variety is a local species in Daao Town, Xinhui, Jiangmen City. This study is divided into three experimental treatments, one of the experimental paddy field A is rice monoculture treatment, no pesticides are used; the sagittarius plantation field B is treated with sagittarius monoculture, no pesticides are used; the experimental paddy field C is treated with rice and sagittarius intercropping way, without using pesticides. Each of the three experimental treatments was repeated three times and arranged in random blocks. The planting methods and other daily management of rice or sagittarius in treatments A and B were the same as the management methods of rice and sagittarius in treatment C of the intercropping experiment.

[0024] The specific production management operation process of experimental treatments A, B, and C is as follows:

[0025] S1. The stage of rice and ar...

Embodiment 2

[0035] The rice variety selected in this example is Hemeizhan (Yueshendao 2008006), and the Sagu variety is Shagu from Guangzhou, Guangdong.

[0036] S1. The stage of rice and arrowroot planting.

[0037] S11. Soil preparation and preparation for planting rice and sagittarius: rice seedling raising, leveling the paddy field. Apply basal fertilizer about 20 days before rice transplanting, and the standard of basal fertilizer application is every 667m 2 Apply 1400kg of decomposed chicken manure, then transplant rice seedlings, and transplant 90cm plant height and 30cm crown width of Sagittarius seedlings after another 7 days; rice seedlings and Sagittarius are intercropped at 4:2, that is, 2 rows of Sagittarius are planted for every 4 rows of rice intercropping The distance between the paddy rice planting zone and the sagittarius planting zone is 27cm; the row spacing of the rice seedlings is 17cm×18cm, and the row spacing of the sagittarius seedlings is 30cm×35cm.

[0038] S1...

Embodiment 3

[0046] The rice variety selected in this example is Yuejingsimiao No. 2 (Yueshendao 2006067), and the Sagittarius variety is Bairou Sagittarius from Guangdong.

[0047] S1. The stage of rice and arrowroot planting.

[0048] S11. Soil preparation and preparation for planting rice and sagittarius: rice seedling raising, leveling the paddy field. Apply basal fertilizer about 20 days before rice transplanting, and the standard of basal fertilizer application is every 667m 2 Apply 1000kg of decomposed chicken manure, then transplant rice seedlings, and transplant 80cm plant height and 30cm crown width of Sagittarius seedlings after another 7 days; rice seedlings and Sagittarius are intercropped at 5:3, that is, 3 rows of Sagittarius are planted for every 5 rows of rice intercropping The distance between the paddy rice planting belt and the arrowhead planting belt is 33cm; the row spacing of the rice seedlings is 17cm×22cm, and the row spacing of the arrowroot seedlings is 35cm×40c...

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Abstract

The invention discloses a method for controlling rice blast and sheath blight by intercropping sagittaria sagittifolia in a rice field, and particularly relates to a method for planting rice and sagittaria sagittifolia in an intercropping way and harvesting mature rice and mature sagittaria sagittifolia in sequence. Field experiment results prove that with intercropping, rice and sagittaria sagittifolia have the symbiotic period in the field, so that the rice sheath blight infection rate of the rice intercropping cultivation is lower than that of rice monoculture; in an elongation stage, a heading stage, a filling state and a milk-ripe stage, the disease occurrence rates of the rice intercropping cultivation are respectively lower than that of the rice monoculture by 64.29%, 88.24%, 25% and 60%; furthermore, the rice blast infected leaf rate of the rice intercropping cultivation is lower than that of the rice monoculture on the whole, and the average control effect reaches up to 31.33%. Compared with the prior art, the method does not use chemical pesticides when being used for controlling the rice sheath blight and the rice blast, thus having obvious ecological economic benefits and guaranteeing the safe production of agricultural products; furthermore, field operation is convenient, and thus the method is convenient for actual popularization and application.

Description

technical field [0001] The invention relates to the field of controlling rice diseases by using an ecological agriculture model, in particular to a method for controlling rice blast and sheath blight by intercropping arrowroot in rice fields. Background technique [0002] At present, more than 60% of the population in our country takes rice as the staple food. In order to meet the needs of food production and the development of economic interests, most rice cultivation is carried out in a single and intensive manner, which leads to an increasing trend of decreasing biodiversity in farmland ecosystems. Strengthening, often lead to damage and loss of ecosystem balance and frequent occurrence of pests and diseases. According to the estimates of the Food and Agriculture Organization of the United Nations, the world's annual loss due to disease accounts for about 10% of the total grain output. In order to prevent and control diseases, a large amount of pesticide input not only i...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G16/00A01G22/22
Inventor 章家恩杨滔郭靖梁开明罗明珠傅玲赵本良
Owner SOUTH CHINA AGRI UNIV
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