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How is the D You 362 rice variety?
(1) Variety source: This variety was developed by the Rice Research Institute of Sichuan Agricultural University by crossing D Shan A with Shuhui 362. (2) Variety characteristics: This combination has a total growth period of about 150 days, 2-3 days longer than the control Shanzhai 8. Plant height is 87.8 cm, average grains per panicle is 152, seed-setting rate is 81.8%, 1000-grain weight is 26.2 g, brown rice rate is 82.5%, milled rice rate is 71.4%. Processing and appearance quality are superior to the control. Resistance identification (leaf blast grade 3-5, neck blast grade 3-7) shows relatively strong rice blast resistance. This combination has vigorous growth, strong tillering ability, and is suitable
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Introduction to the Rice Variety D You 3232
(1) Variety source: A hybrid medium indica late-maturing combination developed by the Wanxian City Agricultural Science Research Institute and the Rice Research Institute of Sichuan Agricultural University using D297A/32 (i.e. IR26/IR54/Hongshuang 2275). (2) Characteristics: The growth period is 3-4 days longer than that of Shanyou 63, plant height is 110 cm, tillering ability is strong, leaf color is dark green, plant type is compact, color retention at late stage is good, and ratooning ability is strong. Leaf blast 4-7 grade, neck blast 3-7 grade, blast resistance superior to 63. Number of panicles per mu 163,400, average per panicle
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Detailed introduction to the rice variety D You 162
(1) Variety source: A medium indica early-maturing hybrid combination developed by the Rice Research Institute of Sichuan Agricultural University using D (Shan) A / Shuhui 162. (2) Characteristics: The growth period is 143 days, 1-2 days longer than Shanzhai 8. The plant height is 89.9 cm, with 137.3 grains per panicle, a seed-setting rate of about 80%, and a 1000-grain weight of 27.5 g. The seedling stage has vigorous growth, strong tillering ability, and good color conversion in the later stage. Leaf blast is grade 4-6, and neck blast is grade 0-5. (3) Yield performance: Participated in the provincial regional trial in 1994-1995, respectively
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Introduction to the Characteristics and Traits of the D You 156 Rice Variety
Moderate plant type, relatively strong tillering ability, whole growth period 140 days, plant height 110 cm, total grains per panicle 155-165, seed setting rate 80%, medium grain quality, yield 670 kg per mu. This variety has stable traits; sow early at the proper time and plant at a reasonable density; when fertilizing, pay attention to applying a heavy basal fertilizer. Resistant to rice blast, moderately resistant to bacterial leaf blight.
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Detailed introduction to the rice variety D You 128
Characteristics: This variety is an indica three-line hybrid rice. Grown as a single-season mid-season rice in the upper reaches of the Yangtze River, its average whole growth period is 155.0 days, 2.4 days later maturing than the control Shanyou 63. Plant height is 111.5 cm, plant and leaf shape is moderate, the population is uniform, and cold tolerance is medium. The number of effective panicles per mu is 177,000, panicle length is 23.6 cm, total grains per panicle is 174.3, seed setting rate is 78.9%, and 1000-grain weight is 24.5 g. Resistance: rice blast grade 9, bacterial blight grade 5, brown planthopper grade 9. Main rice quality indicators:
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Introduction to the Rice Variety D702 Youduoxi No. 1
Basic Information D702 Youduoxi No. 1 is a hybrid mid-to-late rice bred by the Rice Research Institute of Sichuan Agricultural University and jointly introduced by the Youxi County Improved Seed Biotechnology Research Institute and others.
=In the two-year provincial regional trial from 1998 to 1999, the average yield was 502.7 kg/667 sq m and 564.1 kg/667 sq m, an increase of 9.21% and 9.20% over the control Shanyou 63. As mid-season rice, the whole growth period is 139 days, comparable to the control. Moderately susceptible to rice blast. Breeder: Rice Research Institute of Sichuan Agricultural University -
Introduction to the Characteristics and Traits of the C You 22 Rice Variety
(1) Variety origin: C You 22 is a medium-indica late-maturing combination developed by crossing the male-sterile line CA, bred by Mianyang College of Economics and Technology, with CDR22, bred by the Crop Research Institute of the Provincial Academy of Agricultural Sciences. (2) Characteristics and traits: The combination has a whole growth period of 148 days, 1.2 days longer than the control Shanyou 63, a plant height of 111.4 cm, a panicle length of 25.7 cm, 169,000 effective panicles, 147.5 grains per panicle, an seed-setting rate of 82%, and a 1000-grain weight of 29.5 g. It has strong tillering ability, a relatively compact plant type, relatively long and upright flag leaves, and dark green leaf color.
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Detailed introduction to the rice variety B You 827
Variety source: developed by the Rice Research Institute of Southwest University of Science and Technology and the Rice Research Institute of Sichuan Agricultural University by crossing the male sterile line 803A with Shuhui 527. Characteristics: the whole growth period is 150.3 days, 0.8 days shorter than the control Shanyou 63; the plant type is compact, the tillering ability is relatively strong, and the color turns well in the later stage. Plant height is 118.9 cm, panicle length 26.3 cm, average grains per panicle 161.5, seed setting rate 82.2%, and 1000-grain weight 28.44 g. Quality testing shows that 9 indicators reach the Ministry-issued second-class fine rice standard. Resistance to rice blast: leaf blast grade 1-6, neck blast
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16% Exianqing is the first choice for controlling rice "small panicle head"
For many years, in some major rice-producing areas such as Jiangsu, the phenomenon of "small panicle head" (also called small-grain distorted panicle) has appeared continuously over many years under multiple varieties, multiple planting levels, and multiple ecological conditions in large-scale production. Its characteristics are: small panicles, small glumes, cracking of the inner and outer husks after grain filling, partial exposure of rice grains, and small grains with dark brown color. It is especially severe in the Lixiahe area, coastal areas, along the Huai River, along the Yangtze River, and hilly areas of Jiangsu Province. It is estimated that in recent years the affected area in Jiangsu Province alone has been about 100,000 hectares each year, reducing rice output by more than 100 million kg, and cumulatively causing about 500 million kg of rice yield loss.
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How to prevent empty and blighted rice grains? Master these technical measures
Empty and blighted rice grains refer to unfertilized empty grains and half-empty grains that fail to develop after fertilization, and this has a great impact on rice yield. Therefore, in rice production, in addition to striving for more panicles and larger panicles, it is also necessary to reduce empty and blighted grains, improve the seed-setting rate, and increase the 1000-grain weight in order to obtain high yields. At present, rice is in the grain-filling and ripening stage. To prevent the occurrence of empty and blighted rice grains and achieve the goal of high yield, comprehensive preventive measures must be taken. The specific measures are as follows: 1. Select varieties with good seed setting. Rice varieties differ in physiological morphology, and the seed-setting rate varies greatly.
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