Winter wheat grain yield response to water and nitrogen on the north american great plains

Water resources in the North China Plain (NCP) are limited, so it’s in urgent need to optimize deficit by irrigation for sustainable winter wheat production in this area. Winter wheat grain yield (GY), contribution of dry matter (DM) remobilization to GY (CDMRG), and water use efficiency (WUE) were investigated in NCP. Compared with non-irrigation treatment, irrigated with 60 mm each at the winter wheat jointing stage (JS) and heading stage (HS) achieved reasonable winter wheat GY and WUE. Compared with irrigation with 120 mm only at JS and irrigation with 40 mm each at JS, HS, and milking stage (MS) of winter wheat, irrigation with 60 mm each at JS and HS provided the highest CDMRG, which resulted to the highest GY and WUE; this result was mainly due to a significant increase of the spike numbers (SN) per m2. The results suggest that in the NCP, in order to achieve reasonable GY and WUE, winter wheat should be irrigated with 60 mm each at JS and HS.

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Winter wheat grain yield, water use, biomass accumulation and remobilisation under tillage in the North China Plain

Field Crops Research ◽

10.1016/j.fcr.2016.03.005 ◽

2016 ◽

Vol 193 ◽

pp. 43-53 ◽

Cited By ~ 15

Author(s):

Pengfei Chu ◽

Yongli Zhang ◽

Zhenwen Yu ◽

Zengjiang Guo ◽

Yu Shi

Keyword(s):

Winter Wheat ◽

Grain Yield ◽

Water Use ◽

North China Plain ◽

North China ◽

Biomass Accumulation ◽

Wheat Grain ◽

The North ◽

The North China Plain

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EFFECTS OF PLANTING SYSTEMS AND STRAW MULCHING ON CARBON EMISSIONS AND WINTER WHEAT GRAIN YIELD IN THE NORTH CHINA PLAIN

Experimental Agriculture ◽

10.1017/s0014479717000217 ◽

2017 ◽

Vol 54 (4) ◽

pp. 520-530 ◽

Cited By ~ 2

Author(s):

YUJIE REN ◽

CHAO GAO ◽

ZHENXING YAN ◽

RUI ZONG ◽

YUZHAO MA ◽

...

Keyword(s):

Winter Wheat ◽

Grain Yield ◽

North China Plain ◽

North China ◽

Utilization Efficiency ◽

Wheat Grain ◽

Straw Mulching ◽

The North ◽

The North China Plain ◽

Precision Planting

SUMMARYTo explore effective ways to decrease soil CO2 emission and increase winter wheat grain yield in the North China Plain, a field experiment was conducted using two planting systems (wide-precision planting and conventional-cultivation planting) and two straw mulching rates (0 and 0.6 kg m−2) to study carbon emission, carbon cumulative emission flux, grain yield and yield carbon utilization efficiency. In the 2013–2014 and 2014–2015 winter wheat growing seasons, CO2 emission rate and cumulative CO2-C fluxes following straw mulching treatment were significantly lower than those following non-mulching treatments, whereas the yield carbon utilization efficiency was significant higher following straw mulching treatment. Straw mulching significantly reduced winter wheat grain yield, which was mainly due to the significant decrease in spike numbers and 1000-kernel weight. However, wide-precision planting system significantly increased winter wheat grain yields by increasing spike numbers under straw mulching conditions. Therefore, wide-precision planting system could compensate for the reduction in winter wheat grain yield under carbon sequestration conditions in the North China Plain.

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