| 摘要: |
| 【目的】研究了关中地区8个紫花苜蓿品种连续8年的生产性能及其利用年限，旨在筛选出适合关中地区的紫花苜蓿新品种。【方法】2002-2009年，以8个国内外紫花苜蓿品种为研究对象，对其株高、鲜干比、茎叶比和产量等进行了测定，运用隶属函数法综合评价了各苜蓿品种的适应性，并对其在关中地区的最佳利用年限进行了分析。【结果】平均株高较高的品种是维多利亚和中苜1号，分别为71.67和70.89 cm；鲜干比较低的品种有放牧者、德宝和维多利亚；茎叶比较高的品种是三得利和关中；不同年份各个苜蓿品种平均产量具有明显差异，其中平均产量较高的品种分别是放牧者、中苜1号和三得利，分别比当地品种关中高48.19%，39.16%和38.55%。根据产量的二次回归方程可知，紫花苜蓿的干草产量高峰出现在第4年。【结论】中苜1号、三得利和放牧者的生产性能均较佳，适宜在关中地区推广应用，且最佳利用年限为5~6年。 |
| 关键词: 紫花苜蓿 生产性能 利用年限 关中地区 |
| DOI： |
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| 基金项目:国家科技支撑计划项目（2011BAD17B05）；农业部公益性行业专项（200903060） |
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| Study on the production performance and utilization period of alfalfa in Guanzhong region |
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| Abstract: |
| 【Objective】Production performance and proper use age of 8 cultivars in continuous 8 years in Guanzhong area was investigated to selected the suitable alfalfa cultivars in Guanzhong region.【Method】In 2002-2009,8 cultivars from abroad and home as subject were investigated,the characteristics including height,dry yield,the ratio of fresh/dry and stem/leaf were tested.And the adaptability and effective utilization period were evaluated comprehensively by the membership function and regressive function.【Result】8 years observation results showed that plant average height of Victoria and Zhongmu No.1 reached 71.67 and 70.89 cm respectively and were higher than others;There were significant differences in dry matter yield among 8 cultivars in different years.Among these cultivars,the high average annual dry-matter-yield were Haygrazer,Zhongmu No.1 and sandity,which were 48.19%,39.16% and 38.55% higher than Guanzhong respectively,and the 4th year was the high-yield period.【Conclusion】Zhongmu No.1,Haygrazer and Sandity were suitable to be cultivated and deserved extension in Guanzhong area,and the best period for economic use was 5 to 6 years. |
| Key words: alfalfa production performance use age Guanzhong region |
