scholarly journals Long-Term Monitoring of Rainfed Wheat Yield and Soil Water at the Loess Plateau Reveals Low Water Use Efficiency

PLoS ONE ◽  
2013 ◽  
Vol 8 (11) ◽  
pp. e78828 ◽  
Author(s):  
Wei Qin ◽  
Baoliang Chi ◽  
Oene Oenema
Keyword(s):  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Wheat Yield ◽  
The Loess Plateau ◽  
Use Efficiency ◽  
Long Term Monitoring ◽  
Rainfed Wheat ◽  
Term Monitoring

Effect of Long-Term Fertilization on Soil Water Balance and Water Use Efficiency in the Loess Plateau of China

2013 ◽  
Vol 361-363 ◽  
pp. 982-987
Author(s):  
Feng Li Zhou ◽  
Yong Hong Hu ◽  
Hai Long Ma ◽  
Sha Xue
Keyword(s):  
Sustainable Development ◽  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Loess Plateau ◽  
Farmyard Manure ◽  
Fertilizer Application ◽  
The Loess Plateau ◽  
Use Efficiency

Rational fertilization is the guarantee for the productivity and stability of crop and sustainable development of rain-fed agriculture. In this study, based on a long term fertilization experiment initiated in 1984, we researched the effect of different fertilizer application on soil water profile distribution and water use efficiency (WUE) from 1999 to 2010. The experimental design consisted a control treatment (CK) and eight fertilizer treatments: farmyard manure (M), farmyard manure and nitrogen (MN), farmyard manure and phosphorus (MP), nitrogen and phosphorus (NP), nitrogen, phosphorus and farmyard manure (NPM), nitrogen and potassium (NK), phosphorus and potassium (PK), nitrogen, potassium and potassium (NPK). Soil moisture content of MN, MP, MNP, M, and NP were significantly lower than Ck in 10-130 cm, while NPK and NK was only slightly lower than Ck. Compared with the CK, on average, treatments MNP and NPK increased the yield of crop by 259% and 226% and they also increased the crop WUE by 202% and 176%, respectively. The results indicated that the fertilizer application of NPK might be the best choice for the sustainable development of arid land agriculture on the Loess Plateau of China.

scholarly journals Soil water cycle and crop water use efficiency after long-term nitrogen fertilization in Loess Plateau

2012 ◽  
Vol 59 (No. 1) ◽  
pp. 1-7 ◽  
Author(s):  
B. Wang ◽  
W. Liu ◽  
Q. Xue ◽  
T. Dang ◽  
C. Gao ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Water Cycle ◽  
Triticum Aestivum L ◽  
Growing Seasons ◽  
Water Recharge ◽  
Use Efficiency ◽  
N Management

The objective of this study was to investigate the effect of nitrogen (N) management on soil water recharge, available soil water at sowing (ASWS), soil water depletion, and wheat (Triticum aestivum L.) yield and water use efficiency (WUE) after long-term fertilization. We collected data from 2 experiments in 2 growing seasons. Treatments varied from no fertilization (CK), single N or phosphorus (P), N and P (NP), to NP plus manure (NPM). Comparing to CK and single N or P treatments, NP and NPM reduced rainfall infiltration depth by 20–60 cm, increased water recharge by 16–21 mm, and decreased ASWS by 89–133 mm in 0–300 cm profile. However, crop yield and WUE continuously increased in NP and NPM treatments after 22 years of fertilization. Yield ranged from 3458 to 3782 kg/ha in NP or NPM but was 1246–1531 kg/ha in CK and single N or P. WUE in CK and single N or P treatments was < 6 kg/ha/mm but increased to 12.1 kg/ha/mm in a NP treatment. The NP and NPM fertilization provided benefits for increased yield and WUE but resulted in lower ASWS. Increasing ASWS may be important for sustainable yield after long-term fertilization.

scholarly journals Spring maize yield, soil water use and water use efficiency under plastic film and straw mulches in the Loess Plateau

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Wen Lin ◽  
Wenzhao Liu ◽  
Qingwu Xue
Keyword(s):  
Water Balance ◽  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Loess Plateau ◽  
Soil Water Balance ◽  
Plastic Film ◽  
The Loess Plateau ◽  
Spring Maize ◽  
Use Efficiency

Abstract To compare the soil water balance, yield and water use efficiency (WUE) of spring maize under different mulching types in the Loess Plateau, a 7-year field experiment was conducted in the Changwu region of the Loess Plateau. Three treatments were used in this experiment: straw mulch (SM), plastic film mulch (PM) and conventional covering without mulch (CK). Results show that the soil water change of dryland spring maize was as deep as 300 cm depth and hence 300 cm is recommended as the minimum depth when measure the soil water in this region. Water use (ET) did not differ significantly among the treatments. However, grain yield was significantly higher in PM compared with CK. WUE was significantly higher in PM than in CK for most years of the experiment. Although ET tended to be higher in PM than in the other treatments (without significance), the evaporation of water in the fallow period also decreased. Thus, PM is sustainable with respect to soil water balance. The 7-year experiment and the supplemental experiment thus confirmed that straw mulching at the seedling stage may lead to yield reduction and this effect can be mitigated by delaying the straw application to three-leaf stage.

Sign in / Sign up

Export Citation Format

Share Document