两系杂交籼稻红米新组合南两优红3号

南两优红3号是广东省农业科学院水稻研究所利用不育系南11S与优质红米新品种南红3号配组育成的两系杂交籼稻红米新组合,具有株型适中、耐肥抗倒、高产稳产、抗病性强、米质优等特点,2019年8月通过广东省农作物品种审定委员会审定。     

越冬红米稻的发生、危害及防治初探

红米稻分为高秆和矮秆两种类型。其单株分蘖性强,成穗数多,但穗粒数和千粒重低,比常规水稻减产12%以上。其加工品质、外观品质及食口性差。红米稻落粒性强,越冬出苗率高,通过增加播种深度,可明显降低其出苗率。     

越冬红米稻的发生、危害及防治初探

红米稻分为高秆和矮秆两种类型。其单株分蘖性强，成穗数多，但穗粒数和千粒重低，比常规水稻减产12％以上。其加工品质、外观品质及食口性差。红米稻落粒性强，越冬出苗率高，通过增加播种深度，可明显降低其出苗率。     

杂交早稻新品种红优2155在福安种植表现及高产栽培技术

红优2155是由福建省三明市农业科学研究所选用红矮A与明恢2155配组育成的杂交稻新品种,2012年通过福建省农作物品种审定。2011年在福安作早稻种植,表现高产稳产、米质优、适应性广、抗逆性强等特点。主要介绍了红优2155在福安作早稻种植表现及栽培技术要点。     

香型优质两系杂交水稻黔香优2000的选育及应用

利用温敏型两用核不育系360S与自育优质抗病恢复系Uni2000配组,育成香型优质多抗杂交水稻新组合黔香优2000.经2002-2003年贵州省杂交水稻区试鉴定和在不同生态区进行生产试验,黔香优2000平均产量分别为7 955.55和7 319.25 kg/hm2,与高产对照相当,且米质优,12项指标均达部颁优质米标准二级以上,其中9项指标达部颁优质米标准一级.稻瘟病接种和自然鉴定结果表明,该组合抗稻瘟病.抗寒性亦强于对照.黔香优2000于2004年4月通过贵州省农作物品种审定委员会审定,可在贵州省中高海拔地区推广.     

优质高产水稻新组合凯香1号栽培技术

凯香1号是贵州省黔东南州农科所育成的一个中迟熟高产优质水稻新组合,经过多年试验示范,于2006年5月通过贵州省农作物品种审定委员会审定。经过2年的试验示范结果表明：该组合产量高、米质优、抗性强、田间生长势旺；后期熟色好；适宜在黔东南州中低海拔地区推广种植。现介绍该品种的产量表现、特征特性及主要栽培技术。     

优质红米恢复系渝恢9341的选育与应用

渝恢9341是重庆市农业科学院用辽粳294为母本与恢复系渝恢7109杂交,后经体细胞培养技术和多年系谱选择育成的优质红米恢复系,具有株叶形态好、米质优、种皮红色、恢复力强等特点,2018年11月通过重庆市农作物品种审定委员会技术鉴定.该恢复系与渝802A配组的杂交组合渝优红9于2018年通过重庆市农作物品种审定委员会审...     

优质特种稻双亚红香1号特征特性及栽培技术

双亚红香1号是陕西双亚粮油工贸有限公司、陕西双亚优质特异米研究开发中心采用系统选育法,从当地红香2号大田中选择优良变异株选育的优质红米新品种,具有米质优、产量高、抗性强、营养丰富、经济价值高等特点。该品种于2014年8月通过陕西农作物品种审定委员会审定,适宜陕南海拔650 m以下稻区种植。     

红米杂稻的发生、危害及其防治

红米杂稻群众俗称野生稻、自生稻或红米稻等。近几年来,随着麦套稻、直播稻等轻简栽培面积的不断扩大,红米杂稻的发生蔓延逐年加重,范围越来越广。据调查,全国各地均有发生,严重田块杂稻率高达50%以上。红米杂稻不仅产量低、     

籼型软性红米水稻新品种粤红宝的选育及其高产栽培技术

粤红宝是以优质软米中二软占为母本、红米品种肇庆红米为父本杂交,经系谱法选育的籼型软性红米新品种。该品种产量高,中抗稻瘟病,糙米呈褐红色,米质较好并有清香味,稻米铁、锌含量高。     

早熟丰产机采棉花品种——新石K26

主要介绍新石K26的选育过程、生物学特性、产量、纤维品质、抗病性及栽培技术要点。     

长江流域棉花轻简高效种植技术探讨

长江流域棉区是中国三大主要产棉区之一。近年来,受劳动力成本上升,棉花用工繁多、比较效益下降,以及生产中机械化、信息化程度低等因素影响,当地棉花种植面积急剧萎缩。为改变现状,从棉花品种、轻简化机械化管理技术、绿色高效栽培技术以及现代农业信息化智能化技术等方面进行了分析,探讨了长江流域棉花轻简高效种植技术措施及研究方向,为长江流域棉花产业持续发展提供参考。     

Effects of application of nitrogen fertilizer on concentrations of P, K, S, Ca, Mg, Na, Cl, Mn, Fe, Cu and Zn in perennial ryegrass/white clover pastures in south-western Victoria, Australia

Effects of timing and rate of N fertilizer application on concentrations of P, K, S, Ca, Mg, Na, Cl, Mn, Fe, Cu and Zn in herbage from perennial ryegrass/white clover pastures were studied at two sites in south-western Victoria, Australia. Nitrogen fertilizer (0, 15, 25, 30, 45 and 60 kg ha^–1) was applied as urea in mid-April, early May, mid-May, early June and mid-June 1996 to pastures grazed by dairy cows. At Site 1, N fertilizer resulted in a linear increase in P, K, S, Mg and Cl concentrations in herbage and a linear decrease in Ca concentration. For all times of application, concentrations of P, K, Ca, Mg and Cl in herbage increased by 0·0048, 0·08, −0·010, 0·0013 and 0·053 g kg^–1 dry matter (DM) per kg N applied respectively. For S concentration, maximum responses occurred in mid-May (0·012 g kg^–1 DM per kg N applied). At Site 2, N fertilizer resulted in a linear increase in P, S and Na concentrations in herbage, a linear decrease in Ca concentration and a curvilinear increase in K and Cl concentration. The maximum responses for P, S and K concentrations in herbage occurred for the N application in mid-June and were 0·015, 0·008 and 0·47 g kg^–1 DM per kg N applied respectively. For Cl concentration, the maximum response occurred for the N application in early June and was 0·225 g kg^–1 DM per kg N applied. Overall, applications of N fertilizer up to 60 kg ha^–1 did not alter herbage mineral concentration to levels that might affect pasture growth or animal health.     

Characterization of starches of proso,foxtail, barnyard,kodo, and little millets

Scanning electron microscope (SEM) pictures of small millet starch granules showed more large polygonal and few small spherical or polygonal granules. The granules of small millets resembled those of rice starch granules. The size of the starch granules ranged from 0.8–10 m. The size of the granules was larger in barnyard millet and smaller in proso millet. Several granules showed deep indentation caused by protein bodies. SEM of starch isolated from 24 hour-germinated kodo millet showed pitting or pinholes at some points due to the attack of amylases (preferentially on bigger granules). Brabender viscoamylograph studies on small millet starches revealed that the gelatinization temperatures ranged from 75.8 to 84.9 ^° C. Barnyard millet possessed lower amylograph viscosity, minimum breakdown, and relative breakdown values when compared to the other small millets.