摘要
研究了土施N肥(2L 0.5%尿素)、覆草(5～6cm厚杂草)和翻耕(20cm表层土翻耕2次)三种措施,对田间条件下的国庆1号/枳和国庆4号/枳的菌根侵染率和孢子密度的影响。结果表明,覆草极显著地提高了2种柑橘根系的孢子密度,而对菌根侵染率无显著影响;施N肥极显著降低2种柑橘的孢子密度;翻耕极显著抑制了2种柑橘的菌根侵染率。2种柑橘的根系菌根侵染率和孢子密度间都存在显著或极显著正相关。
The effects of application of N fertilizer （2L 0.5% carbamide）, covered ruderals （about 5 to 6 cm thick） and tillage （only 20 cm thick soils for two times） on root mycorrhizal colonization and spore density of two citrus （C. unshiu cv. Guoqing No.1/Poncirus trifoliata and C. unshiu cv. Guoqing No.4/Poncirus trifoliata） were investigated in field. The results showed that covered ruderals significantly enhanced the spore density of two citrus. Application of N fertilizer significantly decreased the spore density; and tillage significantly inhibited the root mycorrhizal colonization of two citrus. Root mycorrhizal colonization was significantly positive correlated with spore density in two citrus.
出处
《亚热带植物科学》
2005年第3期15-17,共3页
Subtropical Plant Science
基金
科技部科技三峡移民开发专项(2002EP090016
2003EP090018)资助
关键词
柑橘
丛枝菌根
农业措施
菌根侵染率
孢子密度
citrus
arbuscular mycorrhiza
agricultural practice
root mycorrhizal colonization
spore density
