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Relationship between Leaf Area Index and Yield of Hybrid Rice 被引量:2
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作者 熊洪 徐富贤 +5 位作者 朱永川 张林 郭晓艺 刘茂 周兴兵 蒋先义 《Agricultural Science & Technology》 CAS 2013年第11期1554-1558,共5页
In the research, 20 indica hybrid rice varieties were investigated under high-dense and low-amount, mid-dense and mid-amount and low-dense and high-amount fertilization conditions in order to explore correlation betwe... In the research, 20 indica hybrid rice varieties were investigated under high-dense and low-amount, mid-dense and mid-amount and low-dense and high-amount fertilization conditions in order to explore correlation between LAI in ful heading stage with yield and to analyze yield differences, yield components, material accumulation and transferring, as wel as correlation between key cultivation factors and yield. Final y, approaches and key technology for yield breakthrough were dis-cussed, which provides theoretical and technological references for rice high yield. 展开更多
关键词 hybrid rice variety LAI YIELD Key technology
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Conservation of Traditional Rice Varieties in a Globally Important Agricultural Heritage System (GIAHS):Rice-Fish Co-Culture 被引量:15
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作者 XIE Jian WU Xuex +4 位作者 WU Xue TANG Jian-jun ZHANG Jia-en LUO Shi-ming CHEN Xin 《Agricultural Sciences in China》 CAS CSCD 2011年第5期754-761,共8页
The traditional rice-fish farming system is selected as a "globally important agricultural heritage system" (GIAHS) by the Food and Agriculture Organization (FAO),United Nations Development Programme (UNDP),an... The traditional rice-fish farming system is selected as a "globally important agricultural heritage system" (GIAHS) by the Food and Agriculture Organization (FAO),United Nations Development Programme (UNDP),and Global Environment Facility (GEF),etc.In Zhejiang Province of China,where the pilot site for this GIAHS farming system is located,we compared the use of traditional rice varieties in rice-fish co-culture and rice monoculture.Further,we determined how traditional rice varieties were performed in this rice-fish system.Only 19% of the farmers who practiced rice monoculture planted traditional varieties while 52% of farmers who practiced rice-fish co-culture planted traditional varieties.Traditional varieties represented 13% of the total land cultivated under rice in the rice-fish system but only 2% in the rice monoculture system.In the rice-fish system,yield was lower for traditional rice varieties than hybrid varieties but application of fertilizers and pesticides was also lower.In a field experiment in the rice-fish system without pesticides,rice planthopper numbers and sheath blight incidence were lower from three traditional varieties than one hybrid variety;yields were 8 to 32% lower from the traditional varieties than the hybrid.Our results showed that traditional rice varieties can be preserved through conserving GIAHS rice-fish co-culture.Our study also indicated that traditional rice varieties can survive in the rice-fish system because these varieties are helpful to the whole system and beneficial to the farmers. 展开更多
关键词 hybrid rice varieties on-farm conservation rice monoculture traditional rice-fish farming
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