Effects of Micronutrients on Seed Yield and Yield Components of Alfalfa
Effects of Micronutrients on Seed Yield and Yield Components of Alfalfa
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DOI：
10.1080/01904160902787909
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发表时间：
2009-04
影响因子：
2.1
通讯作者：
W. Du;X. Tian;Zhizhong Cao;A. Humphries
中科院分区：
文献类型：
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作者：
W. Du;X. Tian;Zhizhong Cao;A. Humphries
微量元素[钼（Mo）、硼（B）、铁（Fe）、锌（Zn）、锰（Mn）、铜（Cu）]对水稻种子产量及产量构成因素的影响对西北地区紫花苜蓿的单位面积种子产量、单位面积可育枝数、每枝总状花序数、每总状花序荚数、每荚种子数和千粒重进行了调查，在两个季节（2003-2004年）的torrifluvent土壤和海拔1720米的网站。经过两年的试验研究表明，钼、硼对苜蓿种子生产的影响更为重要。钼提高种子产量27- 47%，每枝总状花序数38- 55%，每总状花序荚数100- 133%，每荚种子数48-61%，千粒重24%;硼提高种子产量22- 35%，单位面积可育枝数17- 35%，每枝总状花序数增加38- 64%，每总状花序荚数增加100%，每荚种子数增加41-52%，千粒重增加16%。铁、锰、铜对产量构成因素有影响，但对种子产量无影响。锌对种子产量及产量构成因素无显著影响。在种子产量构成因素中，每总状花序角果数是决定苜蓿种子产量的最重要因素。这项研究的结果将用于建议在世界各地的许多环境中进一步评估钼和硼，并作为制定苜蓿种子生产行业建议的基础。
ABSTRACT Effects of micronutrients [molybdenum (Mo), boron (B), iron (Fe), zinc (Zn), manganese (Mn) and copper (Cu)] on seed yield and yield components (seed yield per unit area, fertile shoots per unit area, number of racemes per shoot, number of pods per raceme, number of seeds per pod and 1000-seed weight) of alfalfa were investigated in the northwest region of China, over two seasons (2003–2004) on a torrifluvent soil and a site of 1720 m altitude. After two years study, it demonstrated that molybdenum and boron were more critical for alfalfa seed production. Molybdenum increased seed yield by 27–47%, the number of racemes per shoot by 38–55%, the number of pods per raceme by 100–133%, the number of seeds per pod by 48–61% and 1000-seed weight by 24%, and boron increased seed yield by 22–35%, fertile shoots per unit area by 17–35%, the number of racemes per shoot by 38–64%, the number of pods per raceme by 100%, the number of seeds per pod by 41–52% and 1000-seed weight by 16%. Iron, manganese, and copper had any effect on yield components, but they had no effect on seed yield. Zinc had no positive effect on seed yield and yield components. Among seed yield components, the number of pods per raceme was the most important factor to determine alfalfa seed yield. Results from this study will be used to recommend further evaluation of molybdenum and boron across a number of environments around the world and as a basis for developing recommendations to the alfalfa seed production industry.