نتایج جستجو برای: agricultural fields

تعداد نتایج: 342254  

Journal: :JOURNAL OF ENVIRONMENTAL ENGINEERING AND LANDSCAPE MANAGEMENT 2007

2012
LI Peng FENG Zhiming LIU Yujie XIAO Xiangming

Rice cropping systems not only characterize comprehensive utilization intensity of agricultural resources but also serve as the basis to enhance the provision services of agro-ecosystems. Yet, it is always affected by external factors, like agricultural policies. Since 2004, seven consecutive No.1 Central Documents issued by the Central Government have focused on agricultural development in Chi...

Journal: :Photonics 2022

A compact and low-weight LIDAR instrument has been developed for laser-induced fluorescence spectroscopy sensing of maize fields. Fluorescence had to be installed on a small industrial drone so that its mass was <2 kg power consumption <5 W. The utilized continuous wave diode laser (405 nm, 150 mW) inducing spectrometer backscattered photons acquisition. For field testing, the quadcopter ...

2003
Reija Hietala-Koivu

Rural history and implementing agri-policy are mirrored in an agricultural landscape. No doubt, the basic structure and composition of agricultural landscape depends on local climatic and natural conditions. There is a close connection between agricultural landscape management and biodiversity management at the gene, species and habitat level. The purpose of this paper is to present four ways t...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید