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中国农学通报 ›› 2017, Vol. 33 ›› Issue (18): 25-28.doi: 10.11924/j.issn.1000-6850.casb16110149

• 农学 农业基础科学 • 上一篇    下一篇

滴灌条件下苜蓿刈割适期的研究

陈述明,王玉祥   

  1. 新疆农业大学,新疆农业大学
  • 收稿日期:2016-11-29 修回日期:2017-01-10 接受日期:2017-01-20 出版日期:2017-06-28 发布日期:2017-06-28
  • 通讯作者: 王玉祥
  • 基金资助:
    公益性行业(农业)科研专项“新疆荒漠灌区苜蓿高效种植关键技术研究与集成示范”(201403048-8)。

The Optimum Period of Alfalfa Cutting under Drip Irrigation

  • Received:2016-11-29 Revised:2017-01-10 Accepted:2017-01-20 Online:2017-06-28 Published:2017-06-28

摘要: 试验研究了滴灌条件下不同时期刈割对苜蓿生长及产量和品质的影响。结果表明:灌水频次会影响苜蓿的物候期,试验中高频次(8d/次)的灌溉较低频次(15d/次)物候期有所延后,初花期刈割可以得到最大的苜蓿干草产量(18220.5kg/hm2),但品质较蕾期有所下降;现蕾期刈割的处理CP产量最高(3702.2kg/hm2),品质较好,干草产量为17563.5kg/hm2。

关键词: 马铃薯, 马铃薯, 幼苗, 侧耳素, 抑制作用

Abstract: Medicago Sativa L.cv. Xinmu No.4 was taken as the experiment material to study the effect of cutting time on growth and yield and quality of Alfalfa under frequent drip irrigation, in order to provide basic data for alfalfa production. The results showed that different irrigation frequency had influence on the phenophase of Alfalfa. The phenophase with high-frequent irrigation (8 d/time) was delayed 2-3 d, compared with the low-frequent irrigation (15 d/time). At the flowering stage, the growth of plant height was slowed down. With cutting time delaying, the ratio of stem to leaf of different treatments showed an increasing trend. The ratio of stem to leaf in initial bloom stage and full-bloom stage with cutting treatment was 2.67 and 2.81, respectively, which had significant differences with other treatments (P <0.01). The initial bloom stage with cutting could get the maximum yield of alfalfa hay (18220.5 kg/hm2), but the forage quality declined compared with that in the bud stage. The yield of crude protein was the highest in budding stage with cutting (3702.2 kg/hm2), and the hay yield was 17563.5 kg/hm2.

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