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Wysłany: Czw 3:51, 27 Sty 2011
Temat postu: ralph lauren outlet Breeding upland rice varieties
Breeding upland rice varieties in recent years abroad (lines) yield and quality traits of the comprehensive evaluation of the main
Production levels in upland rice breeding. Table 2 Foreign upland rice varieties (lines), classification and distribution of the main quality traits frequency (continued on page 22) * 19 * 2004 meters in China's control of quality rice in the 86-76 2 Characteristics and cultivation of China to put Rogelio Xiao Rong-Rong Li in the 86-76 from the Hunan Institute of Plant Protection after years of The variety is suitable in mountainous and hilly areas of Hunan Province of days paddy fields, fields and valleys shaded slope of 25 degrees below the dry soil for rice planting season. First, the main characteristics of 1. Production from 1999 to 2001 more products than the average yield of 427.8kg/667m2, compared with the control Brazilian upland rice IAPAR9 (blast resistance of the declining species) increase l8.7%, reached a significant level of production to try to grow a large area demonstration, each 667. {Output of 430 ~ 450kg, over 500kg or more high. Planted in the dry water pipes, water pipes and other conditions, planting can significantly increase production. 2. Brown rice grain quality rate of 83.0%, 75.7% milled rice rate, milled rice rate of 56.6%, grain length 6.6mm, width ratio of 2.6, chalky grain rate of 70%, 8.3 chalkiness %, transparency 2, alkali spreading value 7, gel consistency 88.0mlTl, amylose content 17.0%, 10.3% protein content of rice by the Ministry of Agriculture Products Quality Supervision and Testing Center analysis, the main rice quality secondary indicators of quality rice ministerial standards. 3. Strong resistance to drought; from South China by the National Resistance units designated regional trial identification, blast resistance, the resistance to bacterial leaf blight, brown planthopper resistance in. 4. Height of about 80cm agronomic traits, plant type distribution medium, thick stem, leaves erect, tillering ability, high yield, good grain structure, balance, post-Lase good. 142.9 per panicle, seed setting rate of 81.7%, grain weight 28g. Make a total, IIl season rice cultivation, the whole growth period is about 125 days. Second, the main cultivation techniques 1. Fine soil preparation, enough base fertilizer l0 days prior to planting more than 20cm deep plowing soil, spaced 23 ~ 26cm by ditching, Goushen 7 ~ 10cm, basal 60% of total fat to 70%. Trench foot in the organic fertilizer applied on the basis of urea per 667m2 9kg, P 25k. 2. Timely sowing sowing time should be around in April 25. Spaced 23 ~ 26cm, spacing l5 ~ 20cm, with the seed quantity per 667m2 2-2.5, 5 to 6 per hole shoot-on-demand valley, sowing cover fine soil 0.1 ~ 0.5cm thick. Cultivation of paddy seedlings days of water for the seedling age of 3O days. 3. Timely fill the gaps with seedlings, removed promptly after emergence stage dressing thin dense fill,
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, to fill a vacancy. Topdressing of urea per 667m2 6kg, K l0kg, respectively,
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, 2 to 3 leaf stage, early tillering and jointing drizzle or rain early topdressing. 4. Timely weeding, control stem borer, leaf roller, sheath blight. 5. The role of reasonable round sweet potatoes,
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, corn, peanuts, soybeans and other crops for a year or two crop rotation to maintain soil fertility. Author: I. Plant Protection Research Institute of Hunan Province, Changsha 410125, China; 2. Rice Research Institute in Hunan Province, Changsha 410125, China. Received date :2003-11-24 (on the next page section l9) Table 3l0 copies of foreign high-yielding rice varieties of superior (the main agronomic traits J strains of this study, the majority of upland material slender grain shape, grain grown in the 8.1mm accounted for 94.1%,
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, little or no chalky, medium amylose content. This is not only the quality of upland rice breeding parent materials, while drought can also serve as excellent resources for high yield and quality improvement of existing drought resistance of rice varieties, achieve high yield and quality of rice production in water-saving cultivation.
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