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草业学报 ›› 2018, Vol. 27 ›› Issue (7): 133-145.DOI: 10.11686/cyxb2017330

• 研究论文 • 上一篇    下一篇

生草对油橄榄园土壤性质和油橄榄成花生理的影响

焦润安1,2, 焦健3,*, 李朝周1,2   

  1. 1.甘肃农业大学生命科学技术学院,甘肃 兰州 730070;
    2.甘肃省作物遗传改良和种质创新重点实验室,甘肃 兰州 730070;
    3.甘肃农业大学林学院,甘肃 兰州 730070
  • 收稿日期:2017-08-10 修回日期:2017-12-06 出版日期:2018-07-20 发布日期:2018-07-20
  • 通讯作者: * E-mail: jiaoj@gsau.edu.cn
  • 作者简介:焦润安(1993-),男,甘肃通渭人,在读硕士。E-mail: jiaora0328@163.com
  • 基金资助:
    国家自然科学基金(31660223),甘肃省农牧厅项目(GNSW-2016-28)和秦巴山片区(甘肃)精准扶贫富民产业培育及示范(陇南特色经济林生产群体结构调整与优化研究及示范)项目资助

The effect of sod-culture on orchard soil properties and the floral physiology of olives

JIAO Run-an1,2, JIAO Jian3,*, LI Chao-zhou1,2   

  1. 1.College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
    2.Gansu Key Laboratory of Crop Genetics & Germplasm Enhancement, Lanzhou 730070, China;;
    3.College of Forestry, Gansu Agricultural University, Lanzhou 730070, China
  • Received:2017-08-10 Revised:2017-12-06 Online:2018-07-20 Published:2018-07-20
  • Contact: * E-mail: jiaoj@gsau.edu.cn

摘要: 以油橄榄园为研究对象,设置了间作野豌豆和自然生草两个生草处理,通过测定果园土壤理化性质、土壤酶活性、微生物数量以及油橄榄新梢生长量、花芽分化率、每花序花朵数等指标,探讨生草措施对油橄榄园土壤和树体成花生理的影响。研究结果表明,间作野豌豆和自然生草均显著提高了果园土壤含水量、碱解氮含量、速效磷含量、土壤脲酶、磷酸酶和蔗糖酶活性,其中间作野豌豆的效果较好;生草还提高了土壤有机质含量,降低了土壤容重和pH值,增加了土壤细菌、放线菌和真菌的数量,显著抑制了油橄榄新梢伸长,促进中短枝的发育;间作野豌豆降低了土壤过氧化氢酶活性,而自然生草提高了该酶活性;间作野豌豆也促进了油橄榄花芽分化率及单枝单位长度花序数的增加,特别是短枝的花芽分化率提高显著。总之,在油橄榄果园间作野豌豆和自然生草可以改善土壤性质,提高土壤肥力水平,从而控制新梢旺长,促进花芽分化。

关键词: 生草, 土壤性质, 成花生理, 油橄榄

Abstract: This study investigated the sod-culture of olive orchards either intercropped with vetch (Vicia sepium) or with natural grass mulch applied. Measurements were taken of the soils’ physical and chemical properties, enzyme activities and the number of microorganisms. The number of new olive shoots, rate of flower bud differentiation, per inflorescence flower number and a number of other indexes were also measured. The results showed that the sod-culture produced by both vetch intercropping and natural grass mulching improved the soil water content, alkali-hydrolysable nitrogen content, available phosphorus content, soil urease activities, phosphatase and invertase activities. As a whole, the enhancement effect of intercropping with vetch was higher than that of natural grass mulching. Both intercropping with vetch and natural grass mulching improved the content of soil organic matter and reduced soil pH values. Intercropping with vetch reduced catalase activity, while natural grass mulch increased catalase activity. The sod-culture produced by both intercropping with vetch and natural grass mulching increased the number of the soil bacteria, actinomyces and fungi, inhibited new shoot elongation and improved the development of short and middle length bearing branches. This is very beneficial for improving the structure of fruit-bearing branches. Intercropping with vetch also improved the flower bud differentiation rate and the number of flower buds per length of the single branch, and especially the bud differentiation rate in short shoot branches. In conclusion, the sod-cultures produced in olive orchards by both intercropping with vetch and natural grass mulching checked the over-luxuriant growth of new shoots and promoted flower bud differentiation by improving soil properties and fertility levels.

Key words: sod-culture, soil property, floral physiology, olive