| Effects of micro-catchment with different mulching on maize growth in the western Liaoning Province |
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| DOI：10.7606/j.issn.1000-7601.2011.03.22 |
| Key Words: micro-catchment coverage growth maize |
| Author Name | Affiliation | | FENG Liangshan | Shenyang Agricultural Uniwersity, Shenyang， Liaoning 110161, China
Liaoning Academy of Agricultural Sciences，Shenyang， Liaoning 110161， China
Liaoning Provincial Engineering Research Center for Rainfed and Water-sawing Farming，Shenyang， Liaoning 110161, China | | SUN Zhanxiang | Shenyang Agricultural Uniwersity, Shenyang， Liaoning 110161, China
Liaoning Academy of Agricultural Sciences，Shenyang， Liaoning 110161， China
Liaoning Provincial Engineering Research Center for Rainfed and Water-sawing Farming，Shenyang， Liaoning 110161, China | | XIAO Jibing | Liaoning Provincial Institute of Water and Soil Consenoation, Chaoyang， Liaoning 122000， China | | YANG Ning | Shenyang Agricultural Uniwersity, Shenyang， Liaoning 110161, China
Liaoning Academy of Agricultural Sciences，Shenyang， Liaoning 110161， China
Liaoning Provincial Engineering Research Center for Rainfed and Water-sawing Farming，Shenyang， Liaoning 110161, China | | BAI Wei | Liaoning Academy of Agricultural Sciences，Shenyang， Liaoning 110161， China
Liaoning Provincial Engineering Research Center for Rainfed and Water-sawing Farming，Shenyang， Liaoning 110161, China |
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| Abstract: |
| With traditional cropping pattern as CK，the effects of unary or binary mulching of three micro catchment
patterns on maize growth were studied, and these patterns were ridge film mulching+furrow seeding， ridge film
mulching+furrow film mulching, and ridge film mulching+furow straw mulching. The results show that these micro-
catchment patterns can enhance maize emergence rate by 2.7~3.1 percentage points， and the first two patterns reduce emeryence time by 1~3 d, while the last one extends maize emeryence time by 2 d. Compared to CK，ridge film mulching+furrow film mulching and ridge film mulching+furrow seeding promote significantly the maize plant height and leaf area growth, increasing dry matter accumulation. And, at the initial stages，ridge film mulching+furrow straw mulching slows down maize growth，and plant height，leaf area and dry matter accumulation are at low level， but the maize growth accelerates in the middle and late stages. Ridge film mulching+furrow film mulching makes the growth stages become earlier at higher temperature，there appear signs of premature and earlier aging， and leaf area and the chlorophyll content decrease significantly， but ridge film mulching+furrow straw mulching is just contrary to it. Micro-catchment patterns can increase maize production in varying degrees, especially ridge film mulching+furrow seeding and ridge film mulching+furow straw mulching，which may increase the production by
35.38% and 30.41%. respec-tively caompared with CK. |
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