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A method for controlling rice sheath blight and rice leaf roller by intercropping pikegrass with rice

A technology for rice sheath blight and rice leaf roller, applied in the field of rice pest control, can solve the problems of loss of agricultural biodiversity, increased resistance to diseases, insect pests and weeds, and farmland environmental pollution, achieving good control effect and easy operation , The effect of facilitating the promotion and application

Active Publication Date: 2020-12-11
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This long-term reliance on a large amount of chemical fertilizer and pesticide input and single planting of varieties has gradually led to problems such as soil degradation, farmland environmental pollution, increased resistance to diseases, insect pests and weeds, and loss of agricultural biodiversity. Rice production models and the use of biodiversity to control agricultural pests and improve rice quality have received increasing attention
At present, there is no report of the common disease of pikegrass and rice, and there is no report on the control of rice field diseases by planting pikegrass in the middle of the paddy field in ecological agriculture

Method used

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  • A method for controlling rice sheath blight and rice leaf roller by intercropping pikegrass with rice
  • A method for controlling rice sheath blight and rice leaf roller by intercropping pikegrass with rice

Examples

Experimental program
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Effect test

Embodiment 1

[0022] The rice variety selected in this example is Huanghuazhan (Xiangshendao 2007018). The barracuda variety was purchased from the rural aquatic plant farm in Gaoming District, Foshan City, and planted during the early rice season. This study was divided into three experimental treatments, of which A treatment was rice monoculture treatment, B treatment was Pikegrass monoculture treatment, and C treatment was intercropping rice and pikegrass. In addition to the application of basal fertilizer and consistent daily water management, the three experimental treatments did not apply other chemical fertilizers and pesticides during the normal rice growth cycle. Each treatment was repeated three times and arranged in random blocks.

[0023] The specific production management operation process of experimental treatments A, B, and C is as follows:

[0024] 1. Planting of rice and pike grass:

[0025] Soil preparation for planting rice and pikegrass: rice seedling raising, leveling ...

Embodiment 2

[0037] The rice variety selected in this example is Huanghuazhan (Xiangshendao 2007018). The barracuda variety was purchased from the rural aquatic plant farm in Gaoming District, Foshan City, and planted during the late rice season.

[0038] 1. Planting of rice and pike grass:

[0039] Soil preparation for planting rice and pikegrass: rice seedling raising, leveling paddy field. Apply basal fertilizer about 20 days before rice transplanting, and the standard of basal fertilizer application is every 667m 2 Apply 211.75 kg of decomposed chicken manure, and then transplant pike grass seedlings with a plant height of 20 cm 7 days before rice transplanting; rice seedlings and pike grass are intercropped at 4:2, that is, 2 rows of pike are planted for every 4 rows of rice intercropping Grass; the distance between the rice planting belt and the barracuda planting belt is 40cm; the row spacing of transplanted rice seedlings is 25cm×20cm, and the row spacing of transplanted barracuda...

Embodiment 3

[0051] The rice variety selected in this example is Huanghuazhan (Xiangshendao 2007018). The barracuda variety was purchased from the rural aquatic plant farm in Gaoming District, Foshan City, and was planted in two seasons during the early rice and late rice seasons.

[0052] 1. Planting of rice and pike grass:

[0053] Soil preparation for planting rice and pikegrass: rice seedling raising, leveling paddy field. Apply basal fertilizer about 20 days before rice transplanting, and the standard of basal fertilizer application is every 667m 2 Apply 250 kg of decomposed chicken manure, and then transplant the pike grass seedlings with a plant height of 25 cm 7 days before rice transplanting; the rice seedlings and pike grass are intercropped at a ratio of 5:2, that is, 2 rows of pike grass are planted for every 5 rows of rice intercropping The distance between the rice planting belt and the barracuda planting belt is 40cm; the row spacing of transplanted rice seedlings is 25cm×2...

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Abstract

The invention discloses a method for controlling rice sheath blight and rice leaf folder by utilizing intercropping of rice and pontederia cordata. The method specifically comprises the step of planting the rice and the pontederia cordata in a paddy field by utilizing a crop intercropping manner, and the symbiotic interaction effect of the pontederia cordata and the rice plays a role in controlling the rice sheath blight and the rice leaf folder. According to the method disclosed by the invention, results of field experiments show that through the intercropping of the rice and the pontederia cordata, the rice and the pontederia cordata have a symbiotic period in the field and have diversity interaction, so that a disease index of the rice sheath blight is lower than that of rice single cropping cultivation, and disease indexes of the sheath blight in the middle stage of tillering of early rice, the middle stage of tillering of late rice and the last stage of the tillering of the late rice are respectively 26.25%, 46.18% and 39.18% lower than that of singly-cultivated rice respectively in the same stages; and meanwhile, a disease-leaf rate of the rice leaf folder in the earing stages of the early rice and the late rice are respectively 33.84% and 32.68% lower than that of singly-cultivated rice respectively in the same stages.

Description

technical field [0001] The invention relates to the technical field of using ecological agriculture and biodiversity cultivation to control rice diseases and insect pests, in particular to a method for controlling rice sheath blight and rice leaf roller by using rice intercropping pikegrass. Background technique [0002] Rice is one of the most important food crops for humans, and about 50% of the world's population uses rice as a staple food. In China, the rice planting area accounts for about 25% of the country's cultivated land area, and more than 60% of my country's population uses rice as a staple food. In order to meet the needs of food production and economic development, conventional rice planting is mostly single-scale and intensive production on a large scale. However, rice leaf roller, sheath blight, rice planthopper, etc. occur on a large scale and are the main factors restricting rice production. Factors, chemical control of pests and diseases is still the main...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/22A01G22/00A01G13/00
CPCA01G13/00A01G22/00A01G22/22
Inventor 章家恩蓝妮向慧敏王家新
Owner SOUTH CHINA AGRI UNIV
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