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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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How to Prevent Cold Damage in Rice? Detailed Explanation of Fertilization Measures
Fertilization case: In 2006, in rice-growing areas such as Shangzhi City, Heilongjiang Province, during the early stage of rice growth, some rice seedlings encountered low-temperature weather below 17°C, and rice cold damage problems of varying degrees occurred. In the rice-growing areas of Ningxia and Zhangjiakou, Hebei in the northwest region, in autumn during the late stage of rice growth, just at the grain-filling stage, the temperature suddenly dropped below 20°C, causing rice to suffer cold damage, which was very unfavorable for grain filling, and the seed-setting rate decreased by 10-20%, with severe cases decreasing by more than 50%. Expert comments: In northern rice-growing areas, in order to defend against the cold damage problems brought to rice production by low-temperature weather
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How to carry out mid-season cultivation management of rice? Detailed technical measures for Eryuan County
From last autumn to June this year, Eryuan County experienced continuous drought and high-temperature weather, causing varying degrees of loss to small spring crops and preventing some large spring crops from being sown normally. The county agriculture bureau adopted various scientific and technological measures to actively respond to natural disasters such as the severe drought, striving to "compensate small spring losses with large spring gains" and achieve the annual production target. In rice production, it grasped key measures such as good seeds and good methods, dry seedling raising with sparse planting and shallow transplanting, soil testing and formula fertilization technology, precision quantitative cultivation technology, and high-yield creation. Scientific and technical personnel went deep into the front line of agricultural production, firmly grasped technical
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Introduction to the Ezao No. 6 Rice Variety and Its Cultivation Key Points
Unit: Food Crops Institute, Hubei Academy of Agricultural Sciences. Approval status: approved by the Hubei Provincial Crop Variety Approval Committee, and approved by the National Crop Variety Approval Committee in 1991. Variety registration number: GS01003-1990. Variety source: Hongmeizao/IR8//72-11/Erjiu'ai No. 7. Characteristics: a late-maturing early indica rice variety. Plant height about 85 cm, tillering moderately compact and loose, leaves narrow and long, dark in color, leaves slightly drooping at the early stage and erect at the later stage, panicles drooping, panicle length 20
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Detailed introduction to the rice variety II You Xie 8
[Basic information] II You Xie 8 is a new hybrid rice combination developed by the Crop Research Institute of the Sichuan Academy of Agricultural Sciences by crossing the high-quality, high-combining-ability, disease-resistant wide-compatibility restorer line Chenghui 448, selected from the progeny of a cross between 871028 and Iemont, with II-32A. In recent years, through trials and demonstrations in various regions (cities) of Sichuan Province, II You 448 has shown characteristics such as high quality, high yield, disease resistance, early maturity and wide adaptability. [Characteristics] This combination participated in the 1996-1997 Sichuan Province medium-indica medium-maturity group regional trial,
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Detailed introduction to the rice variety II Youming 86
Variety source: A medium indica hybrid combination developed by the Sanming Agricultural Science Institute of Fujian using II-32A x Minghui 86. Approval status: Approved in 2001 by the National Crop Variety Approval Committee. Characteristics: This combination has a plant height of 100-115 cm, a moderate plant type, medium tillering ability, vigorous growth, upright leaves, large panicles with many grains, about 160 total grains per panicle, a seed-setting rate above 80%, a 1000-grain weight of 28 grams, an average yield of about 550 kg per mu, and medium grain quality. The whole growth period is 146 days, longer than Shanyou
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