Hazardous symptoms can occur from the seedling stage to the panicle stage in rice. The lesions are yellow, early yellow, followed by yellow-brown until they are completely rotted. Heart disease out before the disease, can not continue to grow up and died in the heart, the formation of false dead heart, it is known as heart rot. The diseased plants have a foul odor and are squeezed by hand. The milky white to pale yellow turbid bacteria flow out. In the natural situation, the surface of the lesion is often secreted by the brownish bacterium, which is sometimes mistaken for bacterial blight. Flag leaves are also sometimes diseased, accompanied by early spikes, elongation of the neck, twigs of light brown, crooked deformity, brown grains, and more. Diseased plants are generally taller than healthy plants and have more ineffective delivery.
Comprehensive prevention and control techniques 1. Do a good job in the basic construction of farmland and establish a drainage and irrigation system to prevent flooding and flooding of paddy fields. Usually to prevent deep-seated water in order to avoid rice plant infections. At the same time, rice plant resistance is enhanced through reasonable fertilizer and water management. 2. Strengthen field management to prevent the spread of bacterial diseases. For submerged rice fields, the sediments on the leaves should be cleaned in time and the fields must be drained to prevent the transmission of pathogenic bacteria with the water stream. In order to increase plant nutrition and increase disease resistance, potassium dihydrogen phosphate may be sprayed on the leaves. Can also be applied per acre of lime or plant ash 30 to 40 kg, in order to control the spread of disease and promote rice root regeneration. At the same time with agricultural streptomycin 500 ~ 600 times spray prevention. 3. Immediately use spray streptomycin 500 to 600 times for spraying or preventing the initial disease or the diseased field.
Comprehensive prevention and control techniques 1. Do a good job in the basic construction of farmland and establish a drainage and irrigation system to prevent flooding and flooding of paddy fields. Usually to prevent deep-seated water in order to avoid rice plant infections. At the same time, rice plant resistance is enhanced through reasonable fertilizer and water management. 2. Strengthen field management to prevent the spread of bacterial diseases. For submerged rice fields, the sediments on the leaves should be cleaned in time and the fields must be drained to prevent the transmission of pathogenic bacteria with the water stream. In order to increase plant nutrition and increase disease resistance, potassium dihydrogen phosphate may be sprayed on the leaves. Can also be applied per acre of lime or plant ash 30 to 40 kg, in order to control the spread of disease and promote rice root regeneration. At the same time with agricultural streptomycin 500 ~ 600 times spray prevention. 3. Immediately use spray streptomycin 500 to 600 times for spraying or preventing the initial disease or the diseased field.
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