| Effect of straw mulching rates on physiological and biochemical characteristics of wheat in dryland |
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| DOI：10.7606/j.issn.1000-7601.2018.06.20 |
| Key Words: straw mulching winter wheat in dryland physiological and biochemical characteristic yield |
| Author Name | Affiliation | | WANG He-zheng | College of Agriculture, Henan University of Science and Technology， Luoyang, Henan 471023，China | | ZHANG Jun | College of Agriculture, Henan University of Science and Technology， Luoyang, Henan 471023，China | | XU Guo-wei | College of Agriculture, Henan University of Science and Technology， Luoyang, Henan 471023，China | | MA Chao | College of Agriculture, Henan University of Science and Technology， Luoyang, Henan 471023，China | | HUANG Ming | College of Agriculture, Henan University of Science and Technology， Luoyang, Henan 471023，China | | LI You-jun | College of Agriculture, Henan University of Science and Technology， Luoyang, Henan 471023，China | | CHEN Ming-can | College of Agriculture, Henan University of Science and Technology， Luoyang, Henan 471023，China | | FU Guo-zhan | College of Agriculture, Henan University of Science and Technology， Luoyang, Henan 471023，China |
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| Abstract: |
| To better understand the effects of straw mulching on physiological and biochemical characteristics of wheat and obtain optimal straw mulching rate for the best cultivation of wheat in dryland in the western Henan Province. The cultivar,Yumai 49-198 was used as test wheat crop with 5 straw mulching rates, 0 kg·hm-2(Ⅰ), 2 000 kg·hm-2(Ⅱ), 4 000 kg·hm-2(Ⅲ), 6 000 kg·hm-2(Ⅳ), 8 000 kg·hm-2(Ⅴ). The influence of straw mulching rates on physiological and biochemical indexes in different stages after heading of Yumai 49-198 and the yield were studied.The results showed that increasing straw mulching rates below 6 000 kg·hm-2 increased chlorophyll content, photosynthetic rates, contents of soluble sugar, proline, soluble protein, the activities of superoxide dismutase(SOD), peroxidase(POD), and catalase (CAT) and wheat yield. It decreased malonaldehyde (MDA) content. Straw mulching rates above 6 000 kg·hm-2did not significantly impact these indexes. Consequently, straw mulching rate of 6 000 kg·hm-2was the most optimal rate in dryland of the western Henan. |
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