• 中文核心期刊
  • CSCD来源期刊
  • 中国科技核心期刊
  • CA、CABI、ZR收录期刊

套种玉米对山药生长的影响

Relay Cropping and Mulching with Maize for Chinese Yam Cultivation

  • 摘要: 为提高土地利用率和山药种植效益,探讨适合当前山药生产需求的高效栽培技术,采用对比试验的研究方法,分析山药套种早熟玉米并覆盖玉米秸秆的栽培模式。结果表明:山药套种并覆盖玉米秸秆后,土壤表层土含水量增加26%,土壤孔隙度增加7%,土壤有机质增加17%;对山药萌芽时间和早期幼苗生长无显著影响;但全株分枝增加11%,茎叶总重量增加13%;根系长度增长13%,根重增加14%,且毛细根增多,根系有上浮现象;产量提高7%;每667 m2增收1 900元。山药套种早熟玉米栽培模式增产增收效果明显,适宜在三明市进行推广应用。

     

    Abstract: To improve land-use and yield of Chinese yam (Dioscorea opposita L.) by relay-cropping maize plants was investigated. In trials, effects of planting an early maturing maize and mulching with maize straws on the field were monitored. The results of the tests showed that (a) the moisture content of the surface soil increased by 26%, porosity by 7%, and organic matters by 17%; (b) there was no significant differences on plant germination time and growth of young seedlings of the yam as compared to control; (c) the number of branches on a yam plant increased approximately 11%, weight of stems and leaves 13%, length of roots 13%, and weight of roots 14%, while number of fine roots increased and roots grown closer to the surface; and, (d) the tuber yield increased approximately 7% with an increase on net income of 1900¥per mu. Thus, relay cropping and mulching were recommended for yam cultivation.

     

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