CN104509415A

CN104509415A - Method for preventing and treating rice blast of organic rice by using bioorganic fertilizer

Info

Publication number: CN104509415A
Application number: CN201410839659.6A
Authority: CN
Inventors: 梁家熙; 李宁华
Original assignee: GUANGXI LEYE GUSHI TEA CO Ltd
Current assignee: GUANGXI LEYE GUSHI TEA CO Ltd
Priority date: 2014-12-30
Filing date: 2014-12-30
Publication date: 2015-04-15

Abstract

The invention provides a method for preventing and treating rice blast of organic rice by using a bioorganic fertilizer. The method comprises the following steps: 1. before rice seedlings are transplanted in a paddy field, 6 tons of biological fertilizers are applied to each hectare in a ploughing process; 2. after tillering and row sealing are carried out on the organic rice, 15kg of foliage fertilizers are sprayed to each hectare, and each milliliter of bacteria liquid contains 200 million to 300 million of active bacillus and green trichoderma sp; 3. 5-10 days before earing of the organic rice, 15kg of the foliage fertilizers are sprayed to each hectare according to the step 2. According to the method, the bioorganic fertilizer is applied and beneficial microorganism flora advantages are cultivated; the generation and the reproduction of rice blast pathogenic bacteria in the paddy field are inhibited by using beneficial bacteria, and the prevention and treatment effect of the rice blast can be more than 98%; meanwhile, the effects of increasing the yield and improving the quality are remarkable.

Description

A kind of method utilizing biological organic fertilizer to prevent and treat organic rice rice blast

Technical field

The present invention relates to a kind of prevention and controls of rice blast, particularly relate to a kind of method utilizing biological organic fertilizer to prevent and treat organic rice rice blast.

Background technology

The rice blast of southern china (particularly Guangxi) Rice Cropping process often occurs, and causes the significantly underproduction, even sometimes causes total crop failure.The reason of rice blast morbidity has many-side.One is management aspect: the fertilizer 1, used fully does not become thoroughly decomposed; Too much or excessively slow, plant strain growth is excessively tender for applied nitrogen, and disease resistance reduces susceptible disease.2, do not bake field in time, or roasting field is bad, fills with deep water for a long time, the field susceptible disease of impeded drainage; 3, cultivate overstocked, field ventilation and penetrating light is poor, field susceptible disease 4, extensive management that insect pest is serious, field and the weedy field susceptible disease of surrounding ridge.Two is weather aspects: 1, long-term cloudy weather for several days running, for a long time fill with deep water, fillings of flood string, warmer climate, sunshine deficiency, time fine time rain, foggy, heavy dew susceptible disease.2, soil temperature is low, a run of wet weather, and sunshine, deficiency was conducive to morbidity, and establishing in large scale high quality product kind, disease resistance difference very easily causes large area to be fallen ill.3, partially execute, slow nitrogen fertilizer application, all easily bring out rice blast.

The production process of organic rice does not use the materials such as chemical fertilizer, agricultural chemicals, growth regulator, transgenic technology and product thereof is not adopted yet, but follow the course of nature and ecological principle, the agrotechnique of a series of sustainable development such as adopt breeding combination, circular regeneration, maintenance field ecosystem continual and steady carries out the process of producing.The sac fungi of the pathogen of rice blast normally Mycophyta, when there is rice blast in tradition rice cultivation, common processing mode sprays chemical pesticide as tricyclazole, Isoprothiolane, the fresh tricyclazole of miaow etc., and the medicines such as carbendazim, Hinosan and kasugarnycin are prevented and treated.The plantation of organic rice, then can not use chemical pesticide, and the organic rice production standard of new edition does not allow to use the chemical agent such as jinggangmycin and kasugarnycin yet.Current, organic paddy rice disease control should based on cultural control, and chemical control is auxiliary, by nurturing staff to reach disease-resistant object.Strengthen the field management in vegetative period simultaneously, make its ventilation and penetrating light good, reduce humidity.Therefore, how effectively preventing and treating the generation of organic rice rice blast national about under limitation standard, being a large realistic problem of organic rice plantation, is also a large technical barrier.

Summary of the invention

In order in organic rice planting process, effectively prevent and treat rice blast, the present invention is based on the generation of rice blast pathogen in beneficial bacterium suppression rice field and the principle of breeding, propose a kind of new method.Technical scheme is as follows:

Utilize biological organic fertilizer to prevent and treat a method for organic rice rice blast, it is characterized in that comprising the following steps:

1, before the rice transplanting of rice field, can when plow harrow, per hectare discharges microbial manure 6 tons, cultivates beneficial microbe colony advantage; The content of organic matter of described microorganism fertilizer requires to be no less than 50%, and every gram of fertilizer is no less than 500,000,000, pH value >=8 containing useful viable count, and earthworm can be selected fertile;

2, divide evil Feng Hanghou at organic rice, per hectare sprays the foliage fertilizer 15 kilograms that every milliliter of bacterium liquid contains active bacillus and trichoderma viride 200,000,000 to 300,000,000;

3, first 5 ~ 10 days of organic rice heading, per hectare sprays foliage fertilizer described in step 2 15 kilograms again.

Compared with prior art, the beneficial effect that the present invention obtains is:

1, the present invention uses biological organic fertilizer, cultivate beneficial microbe colony advantage, generation and the breeding of the rice blast pathogen in rice field is suppressed with beneficial bacterium, rice blast control efficiency can reach more than 98%, organic rice seed output and quality also significantly improves and improves, both met organic rice and must not plant the technical standard and requirement that use chemical agent, the remarkable result of rice blast control and increasing yield and improving quality can have been obtained again.

2, the invention process is easy, facility of drawing materials, and abundance is simple, with low cost, has very strong practicality.

Embodiment

Below in conjunction with specific embodiment, the invention will be further described.

Applicant has machine-processed rice production base to be positioned at Bai Zhang township, Xiangzhou County, starts to carry out organic rice production in 2007.Inspection in order to ensure organic rice can be up to standard, applicant is under the prerequisite of adhere rigidly to country's organic rice about planting technology standards and norms, before rice transplanting, when selection production is ploughed a field and is harrowed a field, per hectare Organic Farming Rice Fields discharges fertile 15 tons of " Hua Da board " earthworm, the quality index of organic manure is: organic >=50%, useful viable bacteria >=500,000,000/gram, PH >=8.Divide evil Feng Hanghou at organic rice, spray foliage fertilizer, per hectare sprays liquid beneficial microbe microbial inoculum that green bio fertile Co., Ltd in Beihai, Guangxi produces (every milliliter of viable bacteria >=200,000,000, bacillus are shaft-like and have gemma), consumption 15 kilograms.First 7 days of organic rice heading, the foliage fertilizer 15 kilograms that per hectare is resprayed identical again.Through Guangxi test center and inspection center, Ministry of Agriculture Zhanjiang, farm environment is detected and organic rice Product checking, all reach criterion of acceptability.

Claims

1. utilize biological organic fertilizer to prevent and treat a method for organic rice rice blast, it is characterized in that comprising the following steps:

(1) before the rice transplanting of rice field, can when plow harrow, per hectare discharges microbial manure 6 tons, cultivates beneficial microbe colony advantage; The content of organic matter of described microorganism fertilizer requires to be no less than 50%, and every gram of fertilizer is no less than 500,000,000, pH value >=8 containing useful viable count, and earthworm can be selected fertile;

(2) divide evil Feng Hanghou at organic rice, per hectare sprays the foliage fertilizer 15 kilograms that every milliliter of bacterium liquid contains active bacillus and trichoderma viride 200,000,000 to 300,000,000;

(3) first 5 ~ 10 days of organic rice heading, per hectare sprays the described foliage fertilizer of step (2) 15 kilograms again.