Method for raising small brown rice planthopper by utilizing soil-less cultured barley seedling

Abstract

The invention relates to a method for raising small brown rice planthopper by utilizing soil-less cultured barley seedlings, belonging to the technical field of insect raising. The method comprises the steps of: culturing barley seedlings, raising small brown rice planthopper nymphae, taking care of the eggs delivered by small brown rice planthopper imagoes and carrying out subculture. In the invention, soil-less cultured barley seedlings are adopted, the culture is not limited by field, temperature and other natural conditions, and the seeds of barley seedlings are sterilized to prevent the barley seedlings from rotting. During the raising period, the whole operation is convenient, and the environment is clean and neat without the limitation of time, space and temperature, especially a method of inversely covering a wild-mouth bottle is used for transferring nymphae to reduce the natural death of nymphae during transferring; reasonable culture density is used for nymphae culture and imagoes culture, which ensures the fully utilization of barley seedlings, reduces the frequency for replacing barley seedling, facilitates the operation and saves time. The invention has the advantages of subculture, uniform worm age, large multiplication quantity and the like, and ensures the large quantities of standard worm source required by test.

Description

technical field [0001] The invention belongs to the technical field of insect rearing, and in particular relates to a method for feeding large quantities of brown planthoppers throughout the year. Background technique [0002] The brown planthopper, Laodelphax striatellus (Fallen), also known as the gray rice louse, is one of the important rice pests in the Yangtze River Basin and North China. The vector of disease and other diseases. In recent years, due to the influence of various factors such as changes in farming and cultivation systems, changes in control chemicals, and climate, the population density of SBPH has continued to increase in the Yangtze River Delta regions such as Zhejiang, Jiangsu, and Anhui, which not only caused serious losses in rice yields, but also spread rice stripes. Leaf blight, black-streaked dwarf and other viral diseases. With the aggravation of the harm of SBPH, the research work of SBPH has also attracted much attention. In order to conduct...

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Problems solved by technology

In this method, rice, barnyardgrass, wheat and other feed plants are planted in pots with soil to raise SBPH. The disadvantage is that the feeding cycle is long and limited by conditions such as temperature and site, it is not easy to raise SBPH in large quantities, and the feed plants need to be replaced. It is inconvenient to operate and transfer insect sources, and it will lead to inconsistent developmental periods of SBPH, resulting in wing type differentiation, which is difficult to meet the experimental requirements.

Third, Insect Knowledge, 2008, 45(2): 314-317, a simple method for raising SBPH indoors, Zhang Aimin and Liu Xiangdong, using sponge as a medium and using plastic boxes to cultivate rice seedlings for SBPH breeding, using a single Seedlings are raised at the same age by single-head breeding method. The rice seedlings cultivated by this method are prone to root rot without seed disinfection treatment, and some insect sources will die during the transfer of adult nymphs in group breeding, which cannot provide a large number of rice seedlings of the same age. standard insect source

Fourth, Insect Knowledge, 2008, 45(5): 823-825, Indoor Mass Breeding and Overwintering Feeding Methods of SBPH, Ma Chongyong, Gao Congfang, Peng Yongqiang, Shen Jinliang, Wang Meng, using rice variety 'Wuyu' in spring, summer and autumn The rice seedlings of Jing No. 3' were raised in feeding boxes as hosts, and wheat seedlings (variety 'Yangmai No. 16') were raised in winter. The seeds are not sterilized, and rotten seedlings are prone to occur; winter wheat seedlings are also cultivated in plastic pots with soil, and it is inconvenient to transfer adult nymphs

None of the above-mentioned four documents have carried out seed disinfection treatment, which may easily cause the death of seedling rot and root

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