机构

• 南京土壤研究所 [2]
• 地理科学与资源研究所 [1]
• 长春光学精密机械与物... [1]
• 植物研究所 [1]

采集方式

• OAI收割 [3]
• iSwitch采集 [2]

内容类型

• 期刊论文 [4]
• 会议论文 [1]

发表日期

• 2023 [1]
• 2015 [1]
• 2014 [1]
• 2011 [1]
• 2007 [1]

学科主题

• Agronomy [1]

筛选

浏览/检索结果: 共5条，第1-5条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 The tempo-spatial changes of soil fertility in farmland of China from the 1980s to the 2010s 期刊论文  OAI收割 ECOLOGICAL INDICATORS, 2023, 卷号: 146, 页码: 109913 作者:  Deng, Xiaojuan;  Xu, Xinliang;  Wang, Shihao   |  收藏  |  浏览/下载：12/0  |  提交时间：2023/05/06 Agricultural region  Farmland  Soil nutrient  Integrated Fertility Index  Application rate for N P and K fertilizers   Tracking the photosynthesized carbon input into soil organic carbon pools in a rice soil fertilized with nitrogen 期刊论文  iSwitch采集 PLANT AND SOIL, 2015, 卷号: 392, 期号: 1-2, 页码: 17-25 作者:  Ge, Tida;  Liu, Chang;  Yuan, Hongzhao;  Zhao, Ziwei;  Wu, Xiaohong 收藏  |  浏览/下载：62/0  |  提交时间：2019/10/10 Soil organic C  Rice  N application rate  C-14 labeling  Photo-assimilated C   EFFECTS OF NITROGEN APPLICATION ON BIOMASS ACCUMULATION, REMOBILIZATION, AND SOIL WATER CONTENTS IN A RAINFED WHEAT FIELD 期刊论文  OAI收割 TURKISH JOURNAL OF FIELD CROPS, 2014, 卷号: 19, 期号: 1, 页码: 25-34 作者:  Duan, Wenxue;  Yu, Zhenwen;  Zhang, Yongli;  Wang, Dong;  Shi, Yu   |  收藏  |  浏览/下载：13/0  |  提交时间：2023/03/30 Dry matter accumulation  dry matter remobilization  grain yield  N application rate  rainfed winter wheat  soil water content   Image compression algorithm of high-speed SPIHT for aerial applications (EI CONFERENCE) 会议论文  OAI收割 2011 IEEE 3rd International Conference on Communication Software and Networks, ICCSN 2011, May 27, 2011 - May 29, 2011, Xi'an, China 作者:  Zhang K.;  Zhang K.;  Zhang K.;  Zhang K. 收藏  |  浏览/下载：38/0  |  提交时间：2013/03/25 SPIHT and NLS (Not List SPIHT) are efficient compression algorithms  but the algorithms application is limited by the shortcomings of the poor error resistance and slow compression speed in the aviation and other areas requiring high-speed compression. In this paper  the error resilience and the compression speed are improved. The remote sensing images are decomposed by Le Gall5/3 wavelet  and wavelet coefficients are indexed  scanned and allocated by the means of family blocks. The bit-plane importance is predicted by bitwise OR  so the N bit-planes can be encoded at the same time. Compared with the SPIHT algorithm  this modified algorithm is easy implemented by hardware  and the compression speed is improved. The PSNR of reconstructed images encoded by high-speed SPIHT is slightly lower than SPIHT at rate 1bpp  but the speed is 4.5-6 times faster than SPIHT encoding process. The algorithm meets the high speed and reliability requirements of aerial applications. 2011 IEEE.   Ammonia volatilization and nitrogen utilization efficiency in response to urea application in rice fields of the Taihu Lake region, China 期刊论文  iSwitch采集 PEDOSPHERE, 2007, 卷号: 17, 期号: 5, 页码: 639-645 作者:  Lin De-Xi;  Fan Xiao-Hui;  Hu Feng;  Zhao Hong-Tao;  Luo Jia-Fa 收藏  |  浏览/下载：34/0  |  提交时间：2019/10/10 ammonia volatilization  N application rate  N utilization efficiency  paddy soil  rice yield