Mingrong He

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Agriculture faces great challenges to ensure global food security by increasing yields while reducing environmental costs. Here we address this challenge by conducting a total of 153 site-year field experiments covering the main agro-ecological areas for rice, wheat and maize production in China. A set of integrated soil-crop system management practices(More)
Increased plant density improves grain yield and nitrogen (N)–use efficiency in winter wheat (Triticum aestivum L.) by increasing the root length density (RLD) in the soil and aboveground N–uptake (AGN) at maturity. However, how the root distribution and N–uptake at different soil depths is affected by plant density is largely unknown. A 2–year field study(More)
Nitric oxide and calcium are two kinds of signaling molecules that are the key secondary messenger. An experiment was conducted in saline culture solution to examine the cross-talk interactions of nitric oxide and calcium in common wheat under NaCl stress. Addition of 100 mM NaCl reduced plant growth, decreased the chlorophyll content and root activity,(More)
Leaf blades of the late-sown winter wheat produced the major portion, i.e., more than 60 %, of the total 14C-photosynthates at grain filling, but ear (rachis and glumes) only about 15 %, sheaths about 11 %, and stem internodes about 11 %. The change of plant density in this experiment had little influence on the 14CO2-photoassimilation of the ear (rachis(More)
Plant architecture is an important determinant of crop performance and agro-ecological adaptation. In this study, a field experiment was carried out during the 2008–2009 season to study the architecture of two winter wheat cultivars in situ with a 3-D digitizer at the grain filling stage. The parameters describing plant architecture were analyzed and(More)
A field experiment with wheat showed that after anthesis, the photosystem II (PS II), photochemical efficiency (Fv/Fm) and photosynthetic rate (Pn) of flag leaf decreased substantially, its actual quantum yield of PS II electron transport (phiPS II) and photochemical quenching co-efficient (qP) declined slightly, while its non-photochemical quenching (NPQ)(More)
Water uptake is the fundamental requirement for the initiation and completion of seed germination that is a vital phase in the life cycle of seed plants. We found that seeds produced under four nitrogen levels showed significantly different germination speed. The objective of this study was to study the mechanism of rapid seed germination and explore which(More)
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