| Water utilization efficiency yield and quality of rice under condition of water-saving in the seasonal dry hilly regions of Jiangxi Province |
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| DOI：10.7606/j.issn.1000-7601.2007.06.10 |
| Key Words: rice water-saving irrigation WUE yield quality |
| Author Name | Affiliation | | ZHAO Yan-wen | State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University,Nanjing,Jiangsu 210098；College of Resources and Environmental Sciences Nanjing Agricultural University,Nanjing,Jiangsu 210095,China | | XIAO Xin | College of Resources and Environmental Sciences Nanjing Agricultural University,Nanjing,Jiangsu 210095,China | | HU Feng | College of Resources and Environmental Sciences Nanjing Agricultural University,Nanjing,Jiangsu 210095,China |
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| Abstract: |
| The biological characteristics of introducing rice cultivars under condition of water-saving and effects of water-saving irrigation on rice growth and grain quality were studied by using 12 introduced rice cultivar and 3 local rice cultivar as material in the seasonal dry hilly regions of southern China.The results showed the early rice,mid-season rice and late rice was under the condition of 10%,28%,and 26% water-saving respectively,the introduced early rice cultivar Zhanghan 27,mid-season rice cultivar Liangyoupeijiu and Wuyunjing 7,late rice cultivar Nongxiang 16 and Zhongxiang 1 has higher economic benefit and ecological benefit,and has a bright prospect of extension in the region.The effective panicle number and plant length in water-saving irrigation was lower than that in common irrigation,but the spikelet length,No.of spikelet per plant,seed setting rate and 1000-grain weight in water-saving was higher than that in common irrigation.Among which effects of water-saving irrigation on the effective panicle number,plant length and No.of spikelet per plant had notable discrepancy in some rice cultivars.Compared with the common irrigation,the brown rice rate,milled rice rate,head rice rate,gel consistency,amylose content and alkali-spreading value was increased,but length/width,chalky grain rate and chalkines was decreased.Therefore the rice grain quality could be improved in water-saving irrigation. |
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