【摘 要】
：
The field trial was conducted to study physiological effect of new FA antitranspirant on maize.The new FA antitranspirant was sprayed at 10 d pre-tasseling, ear
【机 构】
：
Institute of Agro-Environment and Sustainable Development Research, Chinese Academy of Agricultural
论文部分内容阅读
The field trial was conducted to study physiological effect of new FA antitranspirant on maize.The new FA antitranspirant was sprayed at 10 d pre-tasseling, ear filling stage and 10 d pre-tasseling + earfilling stage, with the concentrations of 0, 0.5, 1.0, 1.5 and 2.0 ml L-1. The results indicated that the appli-cation of new FA antitranspirant increased nitrate reductase activity (NRA), free proline content, chlorophyllcontent and water content of leaf, thus drought stress can be mitigated. The new FA antitranspirant increasedphotosynthesis rate and reduced transpiration rate, stimulated growth and reduced water loss. 10 d pre-tassel-ing + ear filling stage application had a cumulative effect on the indices compared with 10 d pre-tasseling andear filling stage, except for NRA. The new FA antitranspirant caused an increase of grain yield by 5.37 to29.58 % with different treatments. The optimal concentration is 1.5 ml L-1 , i.e. 75 g new FA antitranspirantdissolved in 50 kg water, and the optimal apply period is 10 d pre-tasseling ± ear filling stage.
其他文献
目的 比较多节段经关节突“V”形截骨(Smith-Petersen osteotomies,SPOs)与经椎弓根椎体截骨(pedicle subtraction osteotomy,PSO)重建强直性脊柱炎胸腰椎后凸畸形患者脊柱-骨盆复合体平衡的效果.方法 2000年8月至2010年6月应用SPOs或PSO矫形内固定术治疗39例强直性脊柱炎胸腰椎后凸畸形患者.SPOs组15例,男13例,女2例；年
In this study, 5 parental rice varieties with different allelopathic potentials were employed indiallel cross [P(P+ 1)/2] to get a set of genetic materials incl
目的 比较单节段与双节段经伤椎椎弓根钉固定治疗轻中度不稳定胸腰椎骨折的临床疗效.方法 2006年6月至2011年6月采用单节段或双节段经伤椎椎弓根钉固定治疗并获得1年以上随访的轻中度胸腰椎骨折患者45例,男22例,女23例；年龄23～76岁,平均43.8岁.单节段固定31例,双节段固定14例.术前、术后第3天和末次随访时测量伤椎及其上、下相邻正常椎体的前缘高度、伤椎后凸Cobb角,比较两组的椎体压
The genetic diversity of Dongxiang wild rice populations was evaluated by using 14 SSR primerpairs. Twelve of the primer pairs amplified polymorphic bands. A to
The expression of β-D-glueuronidase (Gus) gene under the control of soybean heat shock protein(HSP) promoter Gmhsp17. 5-C was investigated in transgenic Nicoti
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
高中数学时效性有待于提高,而作为高中数学教学,也应该把时效的提高放在重要位置上,从而提高学生学习能力和教学质量。
Timeliness of high school mathematics needs to be
Cytoplasmic male sterility (cms) is determined by nuclear-cytoplasmic interactions. Up tonow, most studies are focused on the comparison of cytoplasmic DNAs of
目的构建符合我国国情、适合老年人特点的住院老年脑卒中患者护理评估体系,以评价老年脑卒中患者的健康问题。方法在文献研究的基础上,构建住院老年脑卒中患者护理评估体系草