the source of disease Learn more about the source of disease
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The symptom and transmission route of rose brown spot can make the rose flower more robust from the source.
Rose black spot disease, also known as brown spot disease, is a common disease of Chinese rose. First of all, we should start from the source of infection, clean up the fallen leaves and remove insect branches and diseased leaves in time. Broad-spectrum fungicides were used to control the disease from the early stage of the disease. Beautiful.
2018-10-23 -
Characteristics of silkworm disease control
(1) A wide range of sources of infection. 1. The source of infection in the process of sericulture: dead silkworm, pupa, moth and their diseased silkworm feces, silkworm sand, old silkworm and rotten cocoon are serious sources of infection of sericulture. 2. Cross-infection with wild insects, mulberry leaves contaminated by diseased field insects, insect carcasses and insect droppings are another source of infection of silkworm disease. 3. Pathogen accumulation and poison pollution in sericulture environment. (2) due to poor feeding and management, silkworms are physically weak and prone to disease. Do not attach importance to
2019-01-16 -
What to do with the growth of insects in the rich tree? pest control of the rich tree / 3 insect pests 2 diseases
With the development of the times, more and more people begin to raise plants indoors, and the rich tree, as a kind of beautiful and beautiful plant, is loved by the majority of flower friends. However, because the rich tree is not maintained according to the culture method of the rich tree, the rich tree will grow insects or get sick, thus seriously affecting the ornamental value of the plant.
2018-12-12 -
Comprehensive Prevention of Orchid Diseases
Comprehensive Prevention of Orchid Diseases
2018-04-13 -
Control of diseases and insect pests of Radix Isatidis
Control of diseases and insect pests of Radix Isatidis
2018-06-29 -
Prevention and treatment of common diseases of primroses
Primroses sowing from that moment, not only to do a good job of maintenance and management, disease and pest prevention is also one of the keys to raising primroses, once there is a small problem in a certain procedure, primroses will also play a small mood, so that you are busy without a clue. So what are the common diseases and pests of primroses in the process of culture?
2018-07-01 -
How to prevent and cure rust by planting beans in autumn?
How to prevent and cure rust by planting beans in autumn? Please introduce the prevention and control methods of planting beans in autumn with high temperature and more rainfall, coupled with the large bacterial source (summer spores) of beans planted in spring in the field. Therefore, beans planted in autumn are prone to rust, and farmers should carry out comprehensive control as soon as possible. First, the main symptoms: whole beans.
2018-07-19 -
Culture techniques of rainbow trout
Culture techniques of rainbow trout
2018-07-10 -
Breeding techniques for blast resistance of rice
The main diseases transmitted by rice seeds are evil seedling disease, rice blast, rice false smut, bacterial leaf blight, stripe blight transmitted by gray planthopper at seedling stage and so on. At present, it is the time for rice seed soaking in Qilin District. When soaking rice seeds, demonstration households must insist on soaking rice seeds with chemicals. The main purpose is to kill the germs carried by rice seeds.
2018-09-13 -
Rural water pollution has become a persistent disease
In recent years, the rural water environment situation is grim, livestock breeding, domestic garbage has become an important source of water pollution, causing widespread concern in society. The prevention and control of rural water pollution is both important and difficult in many places. This year's State Council issued the water
2016-01-10 rural areas water control opening up finally one kilometer water pollution dyeing persistent diseases -
Common diseases and control of primroses
Teacher Hsiao Huizi now introduces the common diseases of primrose as follows
2018-10-26 -
Eight taboos of raising chickens in rural areas: the hygiene of chicken sheds is the source of disease!
Raising chickens in the countryside is not uncommon, but if you want to raise well and sell at a high price, you must also need to make a lot of efforts. Today, the editor will introduce to you the eight taboos of raising chickens in rural areas. If you reasonably avoid these eight wrong ways, you will certainly be able to raise chickens.
2020-11-11 Rural areas chicken farming eight taboos chicken coops sanitation yes the source of disease in -
Control of rosette Dwarf Disease in growing Wheat
The symptom characteristics of cluster dwarf disease: the upper leaves of the infected plants have yellow and green stripes, the tillers increase, the plants are dwarf, showing a cluster dwarf shape, generally can not jointing and heading. The infected plants in early spring gradually show disease at the returning green stage and jointing stage, with striped heart leaves and dark green leaves.
2020-11-08 Species wheat clump dwarf disease control symptoms characteristics -
Symptoms and control methods of morning glory white rust
The shape of morning glory is very unique, it is an annual trailing herbaceous flower, but white rust is a common disease of morning glory, if you do not pay attention to prevention and control, it is easy to reduce the ornamental value of morning glory. So what are the symptoms of morning glory white rust? How to prevent and cure it?
2018-07-02 -
Comprehensive control measures of bee disease in spring
The occurrence of bee disease is directly related to the technology of feeding and management. once it occurs, it is bound to affect the proliferation and economic benefits of the colony. Especially in the north of China, when the temperature difference between early and late spring is large, and the sources of honey and powder are scarce, the bee colony is most prone to bee disease. Therefore, in spring, we should take the measures of "prevention first and treatment as the supplement" to control the occurrence of bee disease. The selection and treatment of beekeeping sites the basic conditions for beekeepers to choose the site should be leeward and sunny and the terrain should be dry. There are more willow species in spring, and the shallow mountain areas or cutting sites dominated by Aceraceae plants can only be protected.
2019-01-15 -
The Source and selection experience of Freshwater White Pomfret parent Fish in Culture
The freshwater white Pomfret has a strong reproductive ability, and the parent fish should choose individuals with large size, fast growth, no disease or injury, smooth body surface and distinct color as the parent fish. Moreover, it is necessary to avoid fish that are close to green as parents, so as not to degenerate and affect the growth of offspring.
2020-11-08 Aquaculture freshwater white Pomfret parent fish source and selection experience -
Technical Measures for Drought Resistance and Disaster Reduction of Rice in Heilongjiang Province
In view of the actual drought situation, the rice expert guidance group of the Ministry of Agriculture conducted in-depth investigation in the upland rice areas and put forward scientific drought resistance and disaster reduction technical measures to ensure rice yield increase. 1. Strengthen irrigation water management and dispatching. It is necessary to actively open up water sources, organize as much as possible the withdrawal of running water and the use of irrigation machinery to make use of rivers, lakes and groundwater, and alleviate the contradiction of insufficient reservoir storage capacity. For plots far away from water sources, recharge wells shall be drilled in time to prepare for safe water supply in severe drought seasons. it is necessary to strengthen the management of existing water resources and the cleaning and repair of main canals for water conveyance, and to cover them with films to prevent seepage and leakage. Scientific adjustment
2019-01-16 -
Source of African classical swine fever
In response to the emerging African classical swine fever epidemic in China, the Ministry of Agriculture and Village made it clear today that the African classical swine fever epidemic in China has been introduced from abroad, and the disease will still show a spotty distribution trend for some time to come, but there is little possibility of an outbreak in the region.
2020-11-11 Africa classical swine fever source target China territory continuous emerging -
What are the main sources of peanut production in our country?
What are the main sources of peanut production in our country?
2018-07-05 -
How does giant salamander spit food regularly?
How does giant salamander spit food regularly?
2018-07-04