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Introduction to the Characteristics of the Qinghua'ai No. 6 Rice Variety
Breeding institution: Rice Research Institute, Guangdong Academy of Agricultural Sciences. Approval status: Approved by the Guangdong Provincial Crop Variety Approval Committee, and recognized by the National Crop Variety Approval Committee in 1991. Variety registration number: GS01006-l990. Variety source: Wanqing / Qinglan // Huazhu'ai. Characteristics: A photosensitive late-maturing late indica variety. Plant height 90-96 cm, sturdy stems, narrow and erect leaves, medium tillering ability, 230,000 effective panicles per mu, 94-130 grains per panicle,
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Is copper hydroxide effective for treating rice bacterial leaf streak?
How effective is copper hydroxide for treating rice bacterial leaf streak? How many applications are needed? Please answer objectively. Thank you for your question. The answer is as follows: Copper hydroxide can control rice bacterial leaf streak, bacterial leaf blight, rice blast, sheath blight and rice false smut, etc. Before or at the early stage of disease onset, spray with a 53.8% dry suspension concentrate at 900-1100 times dilution, with 2 consecutive applications.
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Qing'an's 700,000 mu of rice adopts cold-region dry seedling cultivation and controlled irrigation technology for water saving and high yield
The controlled irrigation, water-saving and high-yield technology for cold-region dry seedling rice has been successfully tested in Qing'an. This year, 700,000 mu of rice in this county are using this technology. According to expert calculations, it saves about 450 cubic meters of water per mu, saves 11.2 yuan in pumping costs, and increases yield by an average of 22 kg per mu. In recent years, through the trinity approach of "engineering water saving, mechanism water saving, and technical water saving," Qing'an has reduced irrigation water per mu from nearly 1,000 cubic meters to 500 cubic meters. Over 10 years, it has expanded the paddy field area from 640,000 mu to 1.17 million mu, accounting for half of the cultivated land area. Last year
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Chongqing Agricultural Drought Relief: National Rice Experts Offer Advice
Recently, based on discussions organized among relevant experts within the municipality, and after consultation and revision with the rice expert group of the Ministry of Agriculture, the Chongqing Municipal Agriculture Bureau proposed five technical measures for drought-resistant rice seedling cultivation to ensure transplanting, and specially compiled the "Technical Questions and Answers on Drought-Resistant Rice Seedling Cultivation to Ensure Transplanting," to help grassroots agricultural technicians and farmers further advance autumn grain sowing and ensure full transplanting. Affected by the continuation of last year's severe drought, most rice fields in Chongqing were unable to store water before winter. Since last winter and this spring, temperatures have been higher than usual and precipitation has decreased compared to normal years, causing the current
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What are the control methods for the white-backed planthopper on rice?
Scientific name Sogatella furcifera (Horvath), belonging to the order Homoptera, family Delphacidae. Distributed in the water bamboo and rice-growing areas of China. Hosts include rice, water bamboo, corn, barley, wheat, sugarcane, sorghum, barnyardgrass, bluegrass, and others. Damage characteristics are the same as those of the brown planthopper. Morphological features: macropterous male body length 3.2-3.8 mm, light yellow, with dark brown spots. Vertex projecting forward; on the outer side of the lateral carinae of the pronotum and mesonotum, behind the compound eyes, there is 1 crescent-shaped dark brown spot; the lateral area of the mesonotum is dark brown
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What are the control methods for the rice leaf roller?
Rice leaf rolling is caused by the rice skipper and the rice leaf roller. For controlling the rice leaf roller, 34% profenofos-fluorine emulsifiable concentrate is a new-generation insecticide. This product is a new compound ultra-long-acting insecticide with a broad insecticidal spectrum and stable efficacy. Field trials show that spraying 50 ml per mu diluted in 40 kg of water, with a treatment interval of 23 days, achieves a control effect of over 95%, requires 2 fewer applications than conventional pesticides, reduces pesticide cost by more than 50%, and can save 2/3 of labor, truly delivering labor savings, cost reductions, and improved quality and efficiency.
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What are the control methods for rice kernel smut?
Symptoms Also known as smut, rice dark smut, black kernel smut, etc. It is distributed in the Yangtze River Basin and areas to the south in China, mainly occurring from the flowering stage to the milk-ripe stage of rice, and only infecting the grains. Each panicle may have 1, several, or even dozens of infected grains, with symptoms generally appearing when the rice is near maturity. Infected rice grains turn a dirty green or dirty yellow color, containing black powdery material inside. At maturity, the abdomen splits open, exposing the black powder. Between the inner and outer glumes of the diseased grain there is a black tongue-shaped protrusion, and a black liquid often oozes out, contaminating the surface of the grain. When the diseased grain is opened, the seed can be seen to be partially or entirely transformed into black powdery material.
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What are the control methods for the rice green leafhopper?
Scientific name Inazuma dorsalis (Motschulsky), synonym Recilia dorsalis (Motschulsky), belonging to Homoptera, family Cicadellidae. Distributed in the rice-growing regions south of the Yellow River. Hosts include rice, corn, sorghum, millet, sugarcane, wheat, barley, etc. Occasionally damages sesame, citrus, etc. Damage characteristics: adults and nymphs pierce and suck sap on rice leaves and leaf sheaths, inhibiting the growth and development of damaged plants, causing leaves to turn yellow or the whole plant to wither.
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What are the methods for controlling rice pests?
2.5% rotenone EC and other rotenone-cypermethrin patented series products are new plant-based insecticides developed to address two major problems in current agricultural production in China: pesticide-resistant pests and the frequent occurrence of food poisoning from pesticide residues. They have obtained a national invention patent and the Guangdong Provincial Science and Technology Progress Award. Large-scale trial demonstrations by plant protection experts in our province show that for controlling pesticide-resistant pests such as rice leaf roller (Cnaphalocrocis medinalis), rice planthopper, striped stem borer (Chilo suppressalis), armyworm, diamondback moth (Plutella xylostella), red spider mite, thrips, rust mite and scale insect, using a 1000
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What are the control methods for rice brown spot?
Symptoms Also known as rice sesame leaf blight. It occurs in all rice-growing regions nationwide. Disease can occur from the seedling stage to the harvest stage, and all aboveground parts of the rice plant can be affected, with leaves being the most common. When seeds are affected at the germination stage, the coleoptile turns brown, the sprout fails to emerge, and the cotyledon dies. Leaf and leaf sheath disease at the seedling stage mostly appears as elliptical lesions, the size of sesame seeds, dark brown; sometimes the lesions enlarge and merge into strips, and when there are many lesions the seedlings die. On leaves of adult plants, infection begins as small brown spots, gradually enlarging into elliptical spots the size of sesame seeds, with the center of the lesion brown to grayish white, the margin brown, and around it yellow halos of varying
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