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Anonymous users2024-02-15Common insect pests include sheath blight, rice blast, rice koji disease, seedling disease, bacterial base rot, black streaked dwarf disease, bacterial wilt, dry tip nematode disease, sclerotinia sclerotinia disease, flax leaf spot, and red blight.
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Anonymous users2024-02-14The pests and diseases that will be encountered are sheath blight, seedling disease, ear neck blast, brown rice lice, armyworm, white-backed rice lice, which are all common pests and diseases.
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Anonymous users2024-02-13Common rice pests and diseases include sheath blight, rice koji disease, downy mildew, leaf sheath rot, bacterial stripe spot, rice leaf roller, etc.
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Anonymous users2024-02-121. Sheath blight.
What are the common pests and diseases of rice?
The common disease of rice is sheath blight, which is generally more common in Northeast China, when the disease occurs, the stem part of the rice will appear water-stained lesions, and the disease spots will gradually spread to the upper leaves and stems in the later stage, so that the leaves will dry up and die prematurely, which will eventually lead to the decline of rice quality and yield.
2. Seedling disease.
Seedling disease is also a common disease of rice, when the disease occurs, the rice seedlings appear thin and tall, the leaves will turn pale yellow, the root system of rice will also be stunted, the disease seedlings will die when the situation is serious, and the dead seedlings can also see light red or white mold powdery substance.
3. Spike neck blast.
Rice common diseases are also ear neck blast, when the disease occurs, the cob part of the rice appears gray-black lesion area, resulting in rice can not supply nutrients, this disease is extremely serious to the damage to rice, after the onset of the disease is not timely, it is difficult for rice to grow normally.
4. Main insect pests.
There are many common insect pests in rice, such as brown rice lice, white-backed rice lice, rice leaf roller, armyworm, etc., these pests will eat the leaves of rice and suck the branches and leaves of rice.
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Anonymous users2024-02-11Rice is native to China and India, and was cultivated in China's Yangtze River basin thousands of years ago. The three major diseases of rice are mainly white leaf blight, sheath blight, rice blast, and other important diseases are rice extraction disease, seedling disease, double mold disease, etc., the fundamental reason for the outbreak of disease epidemic is the increase in the proportion of high-quality susceptible varieties, the increase of physiological varieties of pathogens, and the changes in the cultivation system are in the direction of favorable to the development of diseases.
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Anonymous users2024-02-10Rice pests include rice thrips, rice bracts, leaf rollers, rice planthoppers, three-way borers, etc., among which the three-way borer only harms rice and is a monophagous pest.
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Anonymous users2024-02-09The main diseases of rice are: sheath blight, seedling disease, ear neck blast, white leaf blight and so on.
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Anonymous users2024-02-08There are many types of rice pests and diseases, and they occur in both growing areas, from seedling fields to Honda. In recent years, some diseases have also shown a downward trend year by year, such as flax spot disease, malignant seedling disease, etc., and some diseases have a rising trend. For example, sheath blight, sheath rot, browning panicle, ear neck blast, branch blast, etc.
Hair in the field in 2018.
It can be decided whether to control or not according to the amount of insects in the field; Rice koji disease must be sprayed in advance to prevent, if not sprayed to prevent, rice koji disease is easy to epidemic in rainy weather in the later stage, resulting in a significant reduction in rice yield; For poor field management and susceptible rice blast varieties, rice blast should also be sprayed in advance to prevent it. Timely spraying prevention is the key measure. >>>More
Orchid leaf blight, also known as round spot or black spot, is a more serious disease of orchids. The disease mainly occurs on the leaves, the initial lesions are dark brown, nearly round, the lesions that occur at the leaf edge are semicircular, and then rapidly expand into oval large spots, the edges are black-brown, ** gradually become light brown, when wet, reddish-brown protruding dots can be produced on the back of the leaf or on the leaf surface, and they are arranged in a sparse wheel-like manner. The disease mostly occurs in the middle and lower parts of the leaves, and it is easy to cause the death of the leaf segments above the lesions. >>>More
The common pests and diseases of rice are divided into two categories: diseases and insect pests, among which the main diseases are rice white leaf withering and rice seedlings and rice sheath blight. There are five kinds of insect pests: two borer, three borer, big borer, rice leaf roller borer, and rice planthopper.
It is a bacterial disease, mainly affecting leaves, but also stems, pods and seeds. The leaves are infected with water-stained small dots at first, and then gradually expand into irregular brown lesions, and in severe cases, the diseased leaves turn yellow and fall off. The stem is infected, and the lesions are reddish-brown long concave, and the pods are infected, and they are water-stained small spots at first. >>>More
The main diseases of peach trees are: peach gum disease, peach rot disease, peach leaf shrinkage, peach scab, peach perforation, etc. The main pests of peach trees are aphids, leaf rollers, leaf mites, heart borers, scale insects, longhorn beetles, peach borers, beetles, etc. >>>More