绿肥还田和减量施氮对甘肃河西灌区土壤质量及燕麦产量和品质的影响
周琦, 张靖, 王振龙, 施志国, 邓超超, 常浩, 柳洋, 周彦芳

Effects of Green Manure Incorporation and Nitrogen Fertilizer Reduction on Soil Quality, Oat Yield and Quality in Hexi Irrigation District of Gansu Province
Zhou Qi, Zhang Jing, Wang Zhenlong, Shi Zhiguo, Deng Chaochao, Chang Hao, Liu Yang, Zhou Yanfang
图2 不同处理对燕麦生育期平均SPAD值的影响
Fig.2 Effects of different treatments on the SPAD in oat growth period