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稻草覆盖对红壤丘陵茶园的生态调控效应

肖润林1;彭晚霞1;宋同清1;王久荣1;夏艳王君1;汤宇2   

  1. 1中国科学院亚热带农业生态研究所, 长沙 410125; 2长沙县湘丰茶厂, 长沙 410158
  • 收稿日期:2005-09-28 修回日期:2005-11-11 出版日期:2006-05-10 发布日期:2006-05-10

Ecological regulation effects of straw mulching in tea plantation in subtropical hilly red soil region

XIAO Runlin1;PENG Wanxia1;SONG Tongqing1;WANG Jiurong1;XIA Yanjun 1;TANG Yu2   

  1. 1Institute of Subtropical Agriculture,Chinese Academy of Sciences,Changsha 410125, China;2Xiangfeng Tea Factory,Changsha 410158, China

  • Received:2005-09-28 Revised:2005-11-11 Online:2006-05-10 Published:2006-05-10

摘要: 在红壤丘陵区幼龄茶园通过连续4年稻草覆盖的大田试验,研究了稻草覆盖对茶园的生态综合调控效应。结果表明,稻草覆盖改良了土壤理化性状,提高了茶树生长时期(3~10月)的土壤水分含量,特别是土壤表层(0~20 cm)的水分含量;缓冲了茶园土壤温度变化;抑制了茶园杂草的生长;增加了蜘蛛等天敌的数量,有效地控制了假眼小绿叶蝉和茶蚜虫等害虫数量,但茶尺蠖显著增加;有利于蚯蚓的生长,改善了茶园生态环境。

关键词: 小麦, CO2浓度, 渗透胁迫, 活性氧, 膜伤害

Abstract: In this paper,a field experiment with four years straw mulching was conducted in a young tea plantation in subtropical hilly red soil region to study the integrative ecological regulation effects of this mulching.The results showed that straw mulching improved soil physical and chemical properties, increased the moisture content in 0~20 cm soil layer during the key growth period of tea plant (April to June),postponed and shortened the period of high temperature and continual drought,inhibited some pest insects,diseases and weeds,and had duplex effects in raising and keeping temperature during cold time and lowering temperature during hot season.Moreover,it was helpful to the growth of earthworms.

Key words: Wheat, CO2 concentration, Osmotic stress, Active oxygen, Membrane injury