摘要
新型节水灌溉技术在果树栽培及园林绿化中的推广应用,是缓解城市生态用水量与水资源供给不足问题,保障城市绿地生态效益正常发挥最有效的方法和途径。于2016年生长季对比研究滴灌、痕量灌溉2种不同灌溉方式灌水定额相等以及痕量灌溉2个不同灌水定额情况下对矮化密植桃树不同阶段的光合生理活性及生长状况的影响。结果表明:痕量灌溉对于桃树根系分布层土壤水分的补给十分有效;灌水定额相等情况下,痕量灌溉处理下桃树的净光合速率显著高于滴灌;矮化密植桃树痕量灌溉灌水定额因生长季节而异,旺盛生长季应以每株12 L为宜,其他季节可调减少20%,降低至每株10 L。
Application of water saving irrigation techniques in orchard and urban forestry was regarded as an efficient approach to relief severe water shortage ,and even an effective guarantee for the development of urban forest and green space.The effects of two different water saving irrigation methods （drip irrigation and trace irrigation ） and two irrigation quota of trace irrigation on net photosynthetic rate and growth were tested during the growing season in 2016.The results showed that soil water in deeper layers for trace irrigation treatment is much higher;net photosynthetic rate of trace irrigation was significantly higher compared with that of drip irrigation with the same irrigation quota; the most effective trace irrigation quota of peach trees is 12 liter per individual in July, and the amount can be reduced to 10 liter per individual for other time periods during the growing season.
出处
《现代农业科技》
2017年第4期49-51,54,共4页
Modern Agricultural Science and Technology
基金
北京市科委绿色通道项目"痕量灌溉在果园及平原造林中的示范应用"(Z141100006014061)
关键词
矮化密植
桃树
痕量灌溉
生理
滴灌
净光合速率
dwarf and close planting
peach tree
trace irrigation
physiology
drip irrigation
net photosynthetic rate
