Starch grain analysis of human dental calculus to investigate Neolithic consumption of plants in the middle Yellow River Valley, China: A case study on Gouwan site

2015 ◽  
Vol 2 ◽  
pp. 485-491 ◽  
Author(s):  
Dawei Tao ◽  
Jian Zhang ◽  
Wanquan Zheng ◽  
Yanpeng Cao ◽  
Kai Sun ◽  
...  
Keyword(s):  
Yellow River ◽  
River Valley ◽  
Dental Calculus ◽  
Starch Grain Analysis ◽  
Yellow River Valley ◽  
Starch Grain

Resource use efficiency in a cotton-wheat double-cropping system in the Yellow River Valley of China

2020 ◽  
Vol 56 (3) ◽  
pp. 422-439
Author(s):  
Guoping Wang ◽  
Yabing Li ◽  
Yingchun Han ◽  
Zhanbiao Wang ◽  
Beifang Yang ◽  
...  
Keyword(s):  
Resource Use ◽  
Yellow River ◽  
Cropping Systems ◽  
Cropping System ◽  
River Valley ◽  
The Yellow River ◽  
Resource Use Efficiency ◽  
Yellow River Valley ◽  
Double Cropping ◽  
Use Efficiency

AbstractThe cotton-wheat double-cropping system is widely used in the Yellow River Valley of China, but whether and how different planting patterns within cotton-wheat double-cropping systems impact heat and light use efficiency have not been well documented. A field experiment investigated the effects of the cropping system on crop productivity and the capture and use efficiency of heat and light in two fields differing in soil fertility. Three planting patterns, namely cotton intercropped with wheat (CIW), cotton directly seeded after wheat (CDW), and cotton transplanted after wheat (CTW), as well as one cotton monoculture (CM) system were used. Cotton-wheat double cropping significantly increased crop productivity and land equivalent ratios relative to the CM system in both fields. As a result of increased growing degree days (GDD), intercepted photosynthetically active radiation (IPAR), and photothermal product (PTP), the capture of light and heat in the double-cropping systems was compared with that in the CM system in both fields. With improved resource capture, the double-cropping systems exhibited a higher light and heat use efficiency according to thermal product efficiency, solar energy use efficiency (Eu), radiation use efficiency (RUE), and PTP use efficiency (PTPU). The cotton lint yield and biomass were not significantly correlated with RUE across cropping patterns, indicating that RUE does not limit cotton production. Among the double-cropping treatments, CDW had the lowest GDD, IPAR, and PTP values but the highest heat and light resource use efficiency and highest overall resource use efficiency. This good performance was even more obvious in the high-fertility field. Therefore, we encourage the expanded use of CDW in the Yellow River Valley, especially in fields with high fertility, given the high productivity and resource use efficiency of this system. Moreover, the use of agronomic practices involving a reasonably close planting density, optimized irrigation and nutrient supply, and the application of new short-season varieties of cotton or wheat can potentially enhance CDW crop yields and productivity.

scholarly journals Effects of chemical topping on cotton development, yield and quality in the Yellow River Valley of China

2022 ◽  
Vol 21 (1) ◽  
pp. 78-90
Author(s):  
Ling-xiao ZHU ◽  
Lian-tao LIU ◽  
Hong-chun SUN ◽  
Yong-jiang ZHANG ◽  
Ke ZHANG ◽  
...  
Keyword(s):  
Yellow River ◽  
River Valley ◽  
The Yellow River ◽  
Yellow River Valley ◽  
Yield And Quality

Effect of planting date and plant density on cotton traits as relating to mechanical harvesting in the Yellow River valley region of China

2016 ◽  
Vol 198 ◽  
pp. 112-121 ◽  
Author(s):  
Xiangru Wang ◽  
Yuru Hou ◽  
Mingwei Du ◽  
Dongyong Xu ◽  
Huaiyu Lu ◽  
...  
Keyword(s):  
Plant Density ◽  
Yellow River ◽  
Planting Date ◽  
River Valley ◽  
The Yellow River ◽  
Yellow River Valley

The spatial pattern of farming and factors influencing it during the Peiligang culture period in the middle Yellow River valley, China

2017 ◽  
Vol 62 (23) ◽  
pp. 1565-1568 ◽  
Author(s):  
Can Wang ◽  
Houyuan Lu ◽  
Wanfa Gu ◽  
Naiqin Wu ◽  
Jianping Zhang ◽  
...  
Keyword(s):  
Spatial Pattern ◽  
Yellow River ◽  
River Valley ◽  
Culture Period ◽  
Yellow River Valley ◽  
Factors Influencing
Sign in / Sign up

Export Citation Format

Share Document