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博优938是广西钦州市农科所用新育成的恢复系钦938与博A配组而成的感光型高产优质晚籼杂交稻新组合,区内外区域试验均表现为高产稳产,适应性广,耐寒不早衰,一般产量6.75~7.50kg/ha,米质达国标优质稻谷二级标准,2000年12月通过广西农作物品种审定,2003年2月通过国家农作物品种审定,2009年4月获广西钦州市第一届科学技术特别贡献奖。目前该组合已成为广西杂交晚稻当家组合,可在桂南稻作区、桂中稻作区南部以及广东、福建南部地区和海南省等地作晚稻种植。 相似文献
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Optimal conditions for assaying hemolytic complement of goat (caprine) and swine (porcine) sera were determined. Effects of the following were tested: pH, ionic strength, calcium and magnesium ion concentrations, time and temperature of incubation, and ethylenediamine tetracetate concentration. Guinea pig erythrocytes sensitized with goat or cattle antibodies were the most sensitive target cells for goat complement. Sheep and cattle erythrocytes sensitized with rabbit hemolysin were the best target cells for swine complement. Barbital buffer, pH 7.3, ionic strength of 90 nmM relative salt concentration, containing 0.5 mM CaCl2 and 1 mM MgCl2 was the best for swine complement assay. Goat complement lysed best in a barbital buffer, pH 8, ionic strength of 90 to 120 mM of relative salt concentration, in presence of 0.5 mM CaCl2 and 1 mM MgCl2. The optimal incubation temperature was 37 degrees C for both complements. The complement dependent lysis required 75 minutes to reach its maximum. Ethylenediamine tetracetate in 4 mM concentration completely inhibited lysis by both species complements. The CH50 for goat sera varied between 18 and 75 per ml, in swine sera between 75 and 210 per ml. 相似文献
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杂交稻“粤优938”示范表现及高产栽培技术 总被引:1,自引:0,他引:1
粤优938在安溪县经2年中稻和晚稻试验示范,表现出高产、优质、抗性较好等优点,具有较高的增产潜力。栽培上注意合理安排播种期,培育分蘖壮秧,合理密植,增丛增苗,科学运筹肥水,早促早发,综合防治病虫害,以发挥增产潜力。 相似文献
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[目的]研究粤优938在缅甸的高效栽培技术。[方法]对粤优938进行不同密度的栽插试验与肥料用量和运筹试验。[结果]粤优938在缅甸生育期明显缩短,为保证产量,以每穴栽插4苗带蘖壮秧,栽插密度控制在20万穴/hm~2为宜;采用复合肥80%为基肥、20%为分蘖肥+尿素80%为分蘖肥、20%为促花肥的肥料运筹方法,基肥于插秧前施用,分蘖肥于插秧后4、10 d分2次均匀施用,促花肥在叶龄余数3左右时施用为好。[结论]根据缅甸稻谷收购价格低而肥料成本高的实际,在缅甸进行粤优938高效栽培时,肥料施用量以复合肥+尿素商品用量300 kg+450 kg/hm~2为好。 相似文献
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粤优938为三系杂交籼稻新组合。具有米质优、产量高、综合抗性好等特点。2000-2001年在信阳市平 桥区进行的示范生产试验中,产量为10110kg·hm-2,比Ⅱ优838增产6.8%。 相似文献
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