This paper introduces Vietnam's climate condition,main rice production regions and analyses the expansion of rice planting area,rice cropping system during the last decades.The result from the change of rice produ...This paper introduces Vietnam's climate condition,main rice production regions and analyses the expansion of rice planting area,rice cropping system during the last decades.The result from the change of rice production,planting area,yield,and rice trade indicates that the economic reforms in Vietnam from 1986 have contributed to a spectacular rise in rice production and exports.However,there are still problems and opportunities for rice production and export in Vietnam.The paper suggests that Vietnam should make the most use of the advanced international rice cultivars and technology to improve irrigation and water conservancy facilities to benefit rice farmer and consolidate Vietnam to be the major exporter of rice in the world market.展开更多
Three rice landraces that have been continuously cultivated in Yuanyang County for hundreds of years by the local Hani people and three modern varieties cultivated in this area for 3-5 years were comparative tested on...Three rice landraces that have been continuously cultivated in Yuanyang County for hundreds of years by the local Hani people and three modern varieties cultivated in this area for 3-5 years were comparative tested on seven major agronomic characteristics at six different altitudes in the Yuanyang paddy field. The results indicated that agronomic characteristics of the landrace varieties, such as plant height, panicle length and number of effective panicles of landraces had no significant difference at different altitudes, whereas, those agronomic traits fluctuated in the modern varieties. In the Yuanyang terrace area, the Yuanyang landraces showed greater diversity in phenotype and better adaptation compared to the modern varieties.展开更多
基金Supported by the National Natural Science Foundation of China(30771160)Central Public-interest Scientific Institution Basal Research Fund(2009RG005-6)~~
文摘This paper introduces Vietnam's climate condition,main rice production regions and analyses the expansion of rice planting area,rice cropping system during the last decades.The result from the change of rice production,planting area,yield,and rice trade indicates that the economic reforms in Vietnam from 1986 have contributed to a spectacular rise in rice production and exports.However,there are still problems and opportunities for rice production and export in Vietnam.The paper suggests that Vietnam should make the most use of the advanced international rice cultivars and technology to improve irrigation and water conservancy facilities to benefit rice farmer and consolidate Vietnam to be the major exporter of rice in the world market.
基金this work was supported by the National Basic Research Program (No. 2011CB100400)
文摘Three rice landraces that have been continuously cultivated in Yuanyang County for hundreds of years by the local Hani people and three modern varieties cultivated in this area for 3-5 years were comparative tested on seven major agronomic characteristics at six different altitudes in the Yuanyang paddy field. The results indicated that agronomic characteristics of the landrace varieties, such as plant height, panicle length and number of effective panicles of landraces had no significant difference at different altitudes, whereas, those agronomic traits fluctuated in the modern varieties. In the Yuanyang terrace area, the Yuanyang landraces showed greater diversity in phenotype and better adaptation compared to the modern varieties.
