2) cropping index
复种指数
1.
The calculated area for cropland by Wackernagel's method does not consider the influence of cropping index.
从理论角度采用复种指数修正耕地类生态足迹,使核算结果为耕地面积,增强了生态足迹和生态承载力的可比性。
2.
In accordance with the new characteristics of the cropping system in 1990s,the significance of intercropping,relay cropping,multiple cropping and cropping index was analyzed in this paper.
针对９０年代种植制度变革的新特点，分析了间套作、复种及复种指数的意义，讨论了区别间套作的共生期标准、作物标准熟期与熟数系数以及面积系数等概念，提出了多样化的多元多熟种植条件下复种指数的计算规则和方法。
3.
Through taking the regionalism as analysis unit,the relationship between agricultural water production ratio,irrigation intensity and area,and cropping index in Shanxi province is studied.
应用农业标准产量概念,建立农业水分生产率评价方法,以行政分区为分析单元,研究山西省农业水分生产率与灌溉强度、灌溉广度以及复种指数之间的关系,评价区域农业水分生产率状态,分析了不同区域水分生产率及单位标准产量高低的原因,为山西省水生态修复工作的开展提供基础资料。
3) multiple cropping index
复种指数
1.
Study on Remote Sensing Methods for Monitoring Multiple Cropping Index;
复种指数遥感监测方法研究
2.
A Study of Calculating Multiple Cropping Index of Crop in China Using SPOT/VGT Multi-Temporal NDVI Data;
中国农作物复种指数的遥感估算方法研究——基于SPOT/VGT多时相NDVI遥感数据
3.
After liberation the middle subtropics was considered the most increasing extent for multiple cropping index in China.
解放后，我国复种指数以中亚热带增幅最大，亚热带和热带是我国复种指数差异最大的地区，若能缩小这一差异，就是发挥复种潜力，进一步提高我国复种指数。
4) complex exponential method
复指数法
1.
A modal parameter extraction scheme in operating conditions-polyreference cross correlation complex exponential method is presented in this paper.
该文在互相关函数理论的基础上 ,将响应间的互相关函数代替传统复指数法中的脉冲响应函数 ,提出了一种可以对工作状态下的结构进行模态分析的方法———互相关复指数法。
2.
Secondly, the complex exponential method is adopted to acquire amplitude value、attenuation coefficient、frequency and phase angle of the PQ temporary disturbance signal on the basis of the latter-day digital signal processing theory.
然后在近代数字信号处理理论的基础上,提出采用复指数法获取电能质量暂态扰动信号幅值、衰减系数、频率和相角四个特征参数的方法,并且进行了有效性测试。
5) index complex
指数复合
1.
By using the concept of index complex of a maximal subgroup introduced by Deskins in 1959, some new results on the solvability and supersolvability of a finite group are obtained.
利用Deskins在 195 9年所定义的有限群的极大子群的指数复合 ,得到关于群的可解性和超可解性一些新的刻划 。
2.
Two new theorems on the solvability of finite groups are proved by means of index complex of maximal subgroups.
建立了以有限群的极大子群的指数复合刻划可解性的两个新定理。
6) complexity index
复杂指数
1.
Implementation and amelioration about Chinese feature extraction with complexity index;
汉字复杂指数特征提取技术的实现及其改进
补充资料：复种指数
全年农作物总播种面积与耕地面积的百分比。一般情况下，它与热量高低成正比。计算公式为：全年农作物总播种面积耕地面积×100%。复种指数愈大，说明耕地利用程度愈高。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条