双膜育秧取秧量与穴数、播种面积、用种量、播种密度实用查对表(适用富来威2Z一455手扶插秧机)

说明:一、表中:杂交稻每穴标准2株、常规稻每穴4株、发芽率90%、成活率85%、千粒重27克。二、落种粒数和重量等数据在计算时因四舍五入的原因会有微小差异。每亩用种量有两种计算方法:一是每穴落种数×亩总穴数×千粒重;二是每平方米种子重量×每亩用盘量。这两种方法计算结果有微小差异,本表用的第一种方法,前后结果一致,比较直观。三、穴数、基本苗、播量、取秧量的关系:     

辽宁省杂交稻与常规稻产量和品质比较分析

以2001～2005年辽宁省农作物品种审定委员会审定的中晚熟组的36个水稻品种为材料对杂交稻和常规稻在区域试验中的平均产量和主要稻谷性状进行比较分析。结果表明：杂交稻平均产量648．49kg／667m^2,比常规稻高6．87％,达显著水平。杂交稻糙米率、直链淀粉含量和胶稠度的优质达标率与常规稻相当,虽然杂交稻整精米率、垩白粒率和垩白度的优质达标率均明显低于常规稻,但常规稻整精米率、垩白粒率和垩白度的优质达标率也较低,所以杂交稻和常规稻都以整精米率、垩白粒率和垩白度为品质改良的重点。     

Changes in Some Physiological Characteristics After Full Heading Stage in Flag Leaves of Super High-Yielding Inbred Rice

In a field experiment, rice cultivar Shanyou 63 was used as a check cultivar to investigate the changes in activity of peroxidase and contents of malondialdehyde and soluble protein after full heading stage in flag leaves of two super high-yielding inbred rice, including Shengtai 1 and Yuxiangyouzhan. The results showed that the peroxidase activities and soluble protein contents in the leaves of the three cultivars tended to increase gradually to peak values and thereafter descended during stage after full heading. Moreover, both the peroxidase activities and soluble protein contents of Shengtai 1 and Yuxiangyouzhan peaked at 8 days after full heading, which was compared with that of Shanyou 63 at 4 days later. Meanwhile, the malondialdehyde contents in the leaves of the three cultivars increased gradually after full heading stage. In addition, activities of peroxidase and contents of malondialdehyde and soluble protein in different cultivars were various at the same time. In general, for Shengtai 1 and Yuxiangyouzhan, the peroxidase activities and soluble protein contents were higher than those of Shanyou 63, whereas the malondialdehyde contents were lower compared with that of Shanyou 63. And these features could make the senescence of leaf become later and slower and photosynthetic product was more in Shengtai 1 and Yuxiangyouzhan than that in Shanyou 63.     

水稻窄行距插秧机械化技术试验与示范

上海地区从2005年开始试验、示范水稻育插秧机械化技术,通过政府的强力推动和各级农机、农艺部门的紧密融合推动,已形成了以机械播种、高速栽插为核心技术,配套叠盘暗化、无纺布遮盖、水浆管理、肥料运筹、病虫草害防治等农艺技术的水稻育插     

水稻的旱育稀植栽培技术要点

1、培育壮秧 这是水稻旱育稀植增产的基础.旱秧与常规水秧的壮秧标准差别较大.旱育壮秧的标准是:秧苗矮壮墩实,叶片挺直不披,叶色绿中透黄,无病斑;茎粗,秧茎扁平,富有弹性,生长整齐,根系发达;秧龄25-30天,3叶1心至4叶1心,有1-2个分蘖.秧苗高度不超过13厘米,第一叶鞘长度2.4-2.6厘米,最长不超过3厘米. 2、秧床选择 选择靠近水源、排灌方便、地下水位低、杂草少、背风向阳、土壤有机质多、疏松、团粒结构好、偏酸性的旱地做秧床.切忌在低洼、排水不良、土壤粘重、板结、碱性的土壤,或未经改良的老水秧田做秧床.在多雨地区和多雨季节,晚稻育秧要选择高燥、砂性、透水性强的田块做秧床.     

执著梦想 合作创新 奉献种业 强国富民——中国种业十大功勋人物评选揭晓

<正>袁隆平水稻育种家,中国工程院院士,美国科学院外籍院士,中国国家杂交水稻工程研究技术中心主任。他带领团队以1株雄花败育的野生稻为突破口,先后攻克了提高雄性不育率关、"三系"配套关、育性稳定关、杂交优势关、繁殖制种关等"五道难关"。1976年,杂交水稻在全国大面积推广,推广面积138736万平方米,产量比常规稻增产20%。被誉为"杂交水稻之父"。1995年,他主持研制的"两系法"杂交水稻获得成功,比