title: [Introduction of upland rice cultivars to eastern Keerqin sandy land and their biological characteristics].
abstract: Developing water-saving rice cultivation is one important strategy for food security in China. This paper reported the experimental results of introducing six upland rice cultivars to eastern Keerqin sandy land. The field experiment results showed that under the condition of 60% water-saving, the yield of cultivars XH 95-13 and XH 95-13-6 was 10.2% and 5.5% higher than the control, respectively, while other four cultivars decreased by 6.7%-18.6%. Economically, all the cultivars except JP 121 had a higher income than the control, and the profitability of cultivars XH 95-13 and XH 95-13-6 reached 24.0% and 19.3%, respectively. The water productivity of all the six cultivars was over 0.566 kg x m(-3), increased by 59.89%-116.38%. Pot experiment showed that 12.1%-16.3% of soil moisture in 0-15 cm layer was beneficial to the growth of upland rice. In eastern Keerqin sandy land, effective tillers occurred before July 18. In brief, upland rice production could be extensively applicable in eastern Keerqin sandy land to gradually alternate the traditional lowland rice cultivation with continuous flooding, and save much underground water.
authors.affiliation: Daqinggou Ecological Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. zengdh@iae.ac.cn
authors.forename: Dehui
authors.initials: D
authors.lastname: Zeng
authors.forename: Chunxing
authors.initials: C
authors.lastname: Zhang
authors.forename: Guirong
authors.initials: G
authors.lastname: Wang
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Fan
mesh_terms: D000222:Adaptation, Physiological; D002681:China; D003889:Desert Climate; D012275:Oryza / Q000191:economics / Q000254:growth & development* / Q000502:physiology; D012639:Seeds / Q000254:growth & development* / Q000502:physiology; D012987:Soil / Q000032:analysis*; D014867:Water / Q000032:analysis*
chemical_list: D012987:Soil; D014867:Water