摘要
连续三年研究结果表明，旱梯田果园间作，在干旱时段降低土壤水分（８．３％～３３．８％），湿润时段增加土壤水分（９．２％～４０．８％），不同间作物种类增减程度有差异；使土壤生物活性增强，ＮＯ３－Ｎ含量降低，ＮＨ４－Ｎ仅洋芋处理增高显著；间作物根重与果树很重及地上部生长成反比；间作均影响果树生长，以牧草无芒雀麦，百脉根抑制最强，大豆－花生－草木樨次之，洋芋－谷子－糜子影响最小，且经济效益好，可作为该地区同类果园间作的参考模式。
The results of three-year continuous research showed: in dry terraced or- chard intercropping in dry period soil moisture was reduced(8.3%～33.8%);and inhumid period ,soil moisture increased (9.2%～40.8%).With different intercroppings,the range of soil moisture increase or reduction was different. All the intercroppingtreatments could increase bilogiical activity, decrease NO3-N contents, but potato inthe treatment could increase NH4-N significantely. It was a negative correlative be- tween intercropping root system and fruit tree growth.The inhibiting effects of Awn- less broome and Birdsfoot trefoil were serilus ,and soybean-peanuts-sweet clover inthe treatment was the second , and potato-millet-broom corn millet in the treatmentswas lighter,and their economic returns were good.The last treatment group can beused as the reference model of intercropping for same type orchard in this area.
出处
《干旱地区农业研究》
CSCD
北大核心
1995年第3期15-20,共6页
Agricultural Research in the Arid Areas
基金
中瑞水土保持研究
关键词
旱梯田
果园间作
土壤水分
果树
dry terraced field
orchard intercropping
soil moisture
fruit treegrowth
inhibiting
