| This article has been：Browse 1603Times Download 2255Times |
|
|
|
| DOI： |
|
| Impact of Different Nitrogen Modes on Maize Photosynthetic Characteristics, Yield and Quality under Drip Fertilization in Liaoning Brown Soil Regions |
|
ZHANG Lingyi, LI Bo, WEI Xinguang, JI Jianmei
|
|
College of Water Conservancy， Shenyang Agricultrural University， Shenyang 110866, China
|
| Abstract: |
| In order to understand the role of drip irrigation fertilization technology in food production and further explore the reasonable nitrogen system, plot experiments were conducted on a brown soil in Liaoning with maize as the research object to investigate the influence of different nitrogen rates and splits on the photosynthetic characteristics, yield and quality of drip-irrigated maize. Ten treatments were designed including three levels of Nitrogen (excluding basal):125 kg/hm2 (N125), 175 kg/hm2 (N175) and 225 kg/hm2 (N225), 3 levels of Nitrogen application times: 1 (T1), 2 (T2) and 3 times (T3) and no nitrogen process (CK) as the comparison. The results showed that when nitrogen splits were the same, maize photosynthetic capacity, yield and quality showed an increasing trend with the increase of nitrogen application rate, and they were reaching a higher level when nitrogen application rates were 175 and 225 kg/hm2; When nitrogen rates were the same, installment repeatedly nitrogen application effectively delayed photosynthesis decline in corn late childbearing, increased high maize leaf photosynthesis duration, delayed leaf senescence, improved energy efficiency, increased yield significantly and effectively improved the quality of maize. The treatment of 3 nitrogen splits and nitrogen 175~225 kg/hm2 was with high photosynthesis capability in leaves and good quality as well as high yield in fruits. So, the treatment was recommended as the best nitrogen application mode for the production of maize under drip irrigation in the brown soil area of Liaoning. |
| Key words: maize; nitrogen rates; drip irrigation; photosynthetic characteristics; quality |
|
|
