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温室滴灌条件下施用鸡粪和磷肥对土壤磷素的影响
刘志平1,2,武雪萍1(),李若楠3,郑凤君1,张孟妮1,李生平1,宋霄君1
Effect of Applying Chicken Manure and Phosphate Fertilizer on Soil Phosphorus Under Drip Irrigation in Greenhouse
ZhiPing LIU1,2,XuePing WU1(),RuoNan LI3,FengJun ZHENG1,MengNi ZHANG1,ShengPing LI1,XiaoJun SONG1

图4. 不同施肥处理对0—20 cm土层不同形态无机磷含量的影响
不同字母表示同一生育时期不同处理之间在0.05水平差异显著。下同

Fig. 4. Effects of various fertilization treatments on different forms of inorganic P content of the 0-20 cm layer of soil
Different letters above the bars indicate a significant difference (P<0.05) among treatments at the same growth stage. The same symbols were used in the following figures