scholarly journals Response of dry matter translocation and grain yield of summer maize to biodegradable film in the North China Plain

2020 ◽  
Vol 1 (34) ◽  
pp. 87-94 ◽  
Author(s):  
Dechong Tan ◽  
Liangliang Guo ◽  
Junmei Liu ◽  
Yanli Fan ◽  
Quanqi Li
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
North China Plain ◽  
North China ◽  
Summer Maize ◽  
Biodegradable Film ◽  
The North ◽  
The North China Plain

scholarly journals Modeling Water and Nitrogen Balance of Different Cropping Systems in the North China Plain

Agronomy ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 696 ◽  
Author(s):  
Shah Jahan Leghari ◽  
Kelin Hu ◽  
Hao Liang ◽  
Yichang Wei
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
North China Plain ◽  
North China ◽  
Cropping Systems ◽  
Summer Maize ◽  
The North ◽  
The North China Plain ◽  
Spring Maize ◽  
N Use

The North China Plain (NCP) is experiencing serious groundwater level decline and groundwater nitrate contamination due to excessive water pumping and application of nitrogen (N) fertilizer. In this study, grain yield, water and N use efficiencies under different cropping systems including two harvests in 1 year (winter wheat–summer maize) based on farmer (2H1Y)FP and optimized practices (2H1Y)OPT, three harvests in 2 years (winter wheat–summer maize–spring maize, 3H2Y), and one harvest in 1 year (spring maize, 1H1Y) were evaluated using the water-heat-carbon-nitrogen simulator (WHCNS) model. The 2H1YFP system was maintained with 100% irrigation and fertilizer, while crop water requirement and N demand for other cropping systems were optimized and managed by soil testing. In addition, a scenario analysis was also performed under the interaction of linearly increasing and decreasing N rates, and irrigation levels. Results showed that the model performed well with simulated soil water content, soil N concentration, leaf area index, dry matter, and grain yield. Statistically acceptable ranges of root mean square error, Nash–Sutcliffe model efficiency, index of agreement values close to 1, and strong correlation coefficients existed between simulated and observed values. We concluded that replacing the prevalent 2H1YFP with 1H1Y would be ecofriendly at the cost of some grain yield decline. This cropping system had the highest average water use (2.1 kg m−3) and N use efficiencies (4.8 kg kg–1) on reduced water (56.64%) and N (81.36%) inputs than 2H1YFP. Whereas 3H2Y showed insignificant results in terms of grain yield, and 2H1YFP was unsustainable. The 2H1YFP system consumed a total of 745 mm irrigation and 1100 kg N ha–1 in two years. When farming practices were optimized for two harvests in 1 year system (2H1Y)OPT, then grain yield improved and water (18.12%) plus N (61.82%) consumptions were minimized. There was an ample amount of N saved, but water conservation was still unsatisfactory. However, considering the results of scenario analyses, it is recommended that winter wheat would be cultivated at <200 mm irrigation by reducing one irrigation event.

THE RATIO OF CO2–C EMISSION TO GRAIN YIELD IN SUMMER MAIZE CULTIVATED UNDER DIFFERENT SOIL TILLAGE AND STRAW APPLICATION CONDITIONS

2016 ◽  
Vol 53 (1) ◽  
pp. 118-130 ◽  
Author(s):  
HUI FANG HAN ◽  
TANG YUAN NING ◽  
ZENG JIA LI ◽  
HONG MING CAO
Keyword(s):  
Grain Yield ◽  
North China Plain ◽  
North China ◽  
Emission Rate ◽  
Conventional Tillage ◽  
No Tillage ◽  
Summer Maize ◽  
The North ◽  
The North China Plain ◽  
Straw Application

SUMMARYThe relationship between climate, crop growth and crop yield is complicated. This study aimed to determine the ratio of CO2–C emission to grain yield, the field treatments were initiated in 2003, but the measurements for this analysis were collected during the summer maize-growing seasons of 2011 and 2012 in the North China Plain. The experiment showed that conventional tillage with straw application significantly increased grain yield and the ratio of CO2–C emission to grain yield of summer maize. The mean soil CO2–C emission rate with no tillage was significantly lower than that when conventional tillage was used; however, straw application significantly increased the soil CO2–C emission rate, irrespective of whether tillage was performed or not. This was mainly because straw application changed the soil total porosity and organic carbon content. In conclusion, the results of this study support the hypothesis that the ratio of CO2–C emission to grain yield in the North China Plain can be increased by straw application, whereas no tillage decreases this ratio.

Tillage practices affect dry matter accumulation and grain yield in winter wheat in the North China Plain

2016 ◽  
Vol 160 ◽  
pp. 73-81 ◽  
Author(s):  
Yu Shi ◽  
Zhenwen Yu ◽  
Jianguo Man ◽  
Shangyu Ma ◽  
Zhiqiang Gao ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Dry Matter ◽  
North China Plain ◽  
North China ◽  
Dry Matter Accumulation ◽  
Tillage Practices ◽  
The North ◽  
The North China Plain

scholarly journals Weed Responses to Crop Residues Management in a Summer Maize Cropland in the North China Plain

Agriculture ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 746
Author(s):  
Jin Zhang ◽  
Lan-Fang Wu ◽  
Bin-Bin Li
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
North China Plain ◽  
North China ◽  
Crop Residues ◽  
Weed Density ◽  
Maize Grain Yield ◽  
The North ◽  
The North China Plain ◽  
Maize Grain

Crop residues management has great effects on weeds in croplands. To understand the weed responses to crop residues management and weeds impact on crop yield, a field trial with three crop residues management strategies has been conducted in the North China Plain since 2008. Weed community composition and structure across the species, morphological types, life forms, and community levels were investigated during 2019–2020. The results show that the field with crop residues retention significantly decreased weed density than that in the field with no crop residues retention. Furthermore, total crop residues retention significantly decreased weed density than half crop residues retention. Compared with no crop residues retention, the weed aboveground dry matter in the field with total and half crop residues retention significantly decreased. Meanwhile, the maize grain yield significantly increased, resulting from weeds decreased with crop residues retention on the field. Negative correlations were found between maize grain yield and the density and aboveground dry matter of monocotyledonous weeds. These findings indicate that long term crop residues retention under conventional tillage might be an effective agronomic practice to retard weed growth. However, the mechanism of crop residues retention on weed control is still needed to research.

scholarly journals Response of Soil CO2Emission and Summer Maize Yield to Plant Density and Straw Mulching in the North China Plain

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Quanru Liu ◽  
Xinhui Liu ◽  
Chengyue Bian ◽  
Changjian Ma ◽  
Kun Lang ◽  
...  
Keyword(s):  
Grain Yield ◽  
North China Plain ◽  
North China ◽  
Plant Density ◽  
Kernel Weight ◽  
Summer Maize ◽  
Straw Mulching ◽  
Positive Effects ◽  
The North ◽  
The North China Plain

Demand for food security and the current global warming situation make high and strict demands on the North China Plain for both food production and the inhibition of agricultural carbon emissions. To explore the most effective way to decrease soil CO2emissions and maintain high grain yield, studies were conducted during the 2012 and 2013 summer maize growing seasons to assess the effects of wheat straw mulching on the soil CO2emissions and grain yield of summer maize by adding 0 and 0.6 kg m−2to fields with plant densities of 100 000, 75 000, and 55 000 plants ha−1. The study indicated that straw mulching had some positive effects on summer maize grain yield by improving the 1000-kernel weight. Meanwhile, straw mulching effectively controlled the soil respiration rate and cumulative CO2emission flux, particularly in fields planted at a density of 75 000 plants ha−1, which achieved maximum grain yield and minimum carbon emission per unit yield. In addition, soil microbial biomass and microbial activity were significantly higher in mulching treatments than in nonmulching treatments. Consequently, summer maize with straw mulching at 75 000 plants ha−1is an environmentally friendly option in the North China Plain.

scholarly journals Contrasting Impacts of Long-Term Application of Biofertilizers and Organic Manure on Grain Yield of Winter Wheat in North China Plain

Agronomy ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 312 ◽  
Author(s):  
Amara Cisse ◽  
Adnan Arshad ◽  
Xiaofen Wang ◽  
Fanta Yattara ◽  
Yuegao Hu
Keyword(s):  
Grain Yield ◽  
North China Plain ◽  
North China ◽  
Farm Yard Manure ◽  
Grain Yields ◽  
The North ◽  
The North China Plain ◽  
Pig Farm ◽  
1000 Grain Weight

The effects of long-term incorporation of organic manure and biofertilizers have been investigated on winter wheat in the North China Plain (NCP). The five-year field experiment (2013–2018) has illustrated the responses of grain yield and yield components. Seven fertilization approaches, included pig farm-yard-manure and biofertilizers amendments combined with five NPK% drop levels of chemical fertilizer ratio + organic fertilizer + biofertilizer (0, C+O+B) 25%, CL4; 50%, CL3; 75%, CL1; and 100%, CL0), without fertilizer as control (CK), in NCP during the years 2013–2018. Results showed that the grain yields of CL1 and CL2 were equivalent to CL0 in all growing seasons except 2014/2015. The grain yields of CL4 were 29.9% to 46.6% lower than that of CL0 during 2014/2015, 2016/2017, and 2017/2018. The valuable spike-number, grain number per-spike, and 1000-grain weight showed significant variations among different growing periods. Regression analysis of grain yield and yield components indicated that number grains per-spike showed significant increase in seed yield formation. The 1000-grain weight was the major parameter that influenced yield of moderate and low yielding periods, respectively. The results revealed that application of 30 m3 ha−1 pig farm-yard-manure and 20 kg ha−1 biofertilizers has reduced at least 50% of the NPK fertilization without dropping grain yields in the North China Plain.

Improving water use efficiency and grain yield of winter wheat by optimizing irrigations in the North China Plain

2018 ◽  
Vol 221 ◽  
pp. 219-227 ◽  
Author(s):  
Xuexin Xu ◽  
Meng Zhang ◽  
Jinpeng Li ◽  
Zuqiang Liu ◽  
Zhigan Zhao ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
North China Plain ◽  
North China ◽  
The North ◽  
The North China Plain ◽  
Use Efficiency
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