【摘 要】
:
In order to explore the effects of planting seedlings and nitrogen levels on high yielding rice variety,selecting two new varieties,Nanjing 49 and Huaidao 5
【机 构】
:
Institute of Food crops,Jangsu Academy of Agricultural Science
论文部分内容阅读
In order to explore the effects of planting seedlings and nitrogen levels on high yielding rice variety,selecting two new varieties,Nanjing 49 and Huaidao 5,as the experimental materials,2 planting seedling treatments (2 seedlings per hill,5 seedlings per hill) and 2 nitrogen levels (medium nitrogen with 300 kg/ha,higher nitrogen with 450 kg/ha) were conducted under pot conditions.The performance of physiology and yield of experimental rice were investigated.
其他文献
稻米支链淀粉β-淀粉酶水解率的测定结果对进一步测定稻米支链淀粉分支化度待结构参数有着重要的影响.本研究采用β-淀粉酶对稻米支链淀粉进行水解,为了保证水解反应的完
Increasing temperature due to global warming has emerged one of the gravest threats to rice production.The present study examined the influence of high temp
本试验以北方水稻种植最久的吉林省延边州龙井市开山屯镇潴育型水稻土为基础,以长期定位的"单施化肥"、"化肥与有机肥配施"和"单施有机肥"三种施肥类型的稻田土壤为研究对
本文研究了采用超临界流体技术和树脂吸附技术相耦合精制酚酸类化合物(包括结构较简单、易得的水杨酸和典型产品丹参酚酸)在超临界二氧化碳中的洗脱过程。 首先研究了吸附
介孔TiO2作为一种半导体催化剂具有高效、稳定及无毒等优异的性质,同时又具有大的比表面积、均一的孔径结构、多维的骨架结构以及易于回收等介孔材料的特点,而成为目前应用最广
油稻、油稻稻轮作是长江流域最典型的大田种植模式。在湖南省和江西省等两熟制三熟制混合区,不同油稻轮作模式同时存在。选择怎样的种植模式能够有效地利用周年温光资源,实
本文以北方水稻种植最久的吉林省延边州龙井市开山屯镇的水稻田为对象,选择"单施化肥"与"化肥与有机肥配施"2种施肥方式,并在每种施肥方式中设置了采样箱"带苗采气"和"无苗
[目的]旨在明确不同水氮耦合对水稻根系形态代谢的影响及其与灌浆期光合及籽粒库活性的关系。[方法]以新稻20为材料进行盆栽试验,设置浅水层灌溉(0kPa)、轻度水分胁迫(-2
目的:探讨红景天苷抑制日光性皮炎的分子机制。方法:(1)通过免疫组织化学技术(IHC)分析临床日光性皮炎标本中与日光紫外线(SUV)相关MAPK通路因子p-JNKs,p-p38和炎症因子Ki67,CD45,COX-2的表达。(2)选取适宜的SUV照射剂量(不引起细胞凋亡),对JB6 Cl41(小鼠上皮细胞)和Ha Ca T(人角质形成细胞)进行处理,用western blot检测p-p38,p-J
Soil heavy meta1 (HM) pollution poses a severe deurimental influence on environment,safety food production and human health.HMs are absorbed by plants and a