Establishing dynamic thresholds for potato nitrogen status diagnosis with the SPAD chlorophyll meter

来源 :农业科学学报:英文版 | 被引量 : 0次 | 上传用户:litao2006
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The hand-held soil plant analysis development(SPAD) chlorophyll meter has proved to be a promising tool in evaluating the nitrogen status of the potato and guiding fertilization recommendations. In the process of N evaluation of potato plants and N recomm
其他文献
随着政府采购法的正式实施,政府采购的项目范围不断扩大,政府采购规模大幅递增,对社会经济的影响已越来越大,取得了举世瞩目的经济效益和社会效益。由于政府采购工作是一项集政策
The objective of this study was to evaluate supplemental organic chromium(Cr) to finishing lambs on growth performance, carcass characteristics, and meat qualit
Endothelial PAS domain protein 1 gene(EPAS1) is a key transcription factor that activates the expression of oxygen-regulated genes. In this study, in order to b
The maintenance of rapid growth under conditions of CO_2 enrichment is directly related to the capacity of new leaves to use or store the additional assimilated
"一带一路"的经济合作共赢是目的,文化互通是灵魂,推动世界文明秩序发展新格局。文化产业是"一带一路"宗教文化交流的重要路径,亦将带动中西部地区转型发展。大同佛教文化具
The objective of this study was to evaluate the effects of vitamin E(VE; 1 500 or 3 000 international units(IU) d–1) and fat(2% of dry matter calcium salt of soyb
In vitro biological activities including anti-phytopathogenic fungi, antibacterial, antifeedant and herbicidal activities of the extracts from the heartwoods of
财政管理与运转问题关乎到国家兴衰,辽在占有幽云十六州后,统辖部分山西地区,而辽统辖下的山西地区是其重要财赋来源之地,辽朝极为重视。辽朝以西京建立为分界点,在西京建立
Heterosis is an important biological phenomenon, and it has been used to increase grain yield, quality and resistance to abiotic and biotic stresses in many cro
Calcineurin(Cn or CaN) is implicated in the control of skeletal muscle fiber phenotype and hypertrophy. However, little information is available concerning the