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Fig. 3 | Chemical and Biological Technologies in Agriculture

Fig. 3

From: Plastic film mulching with ridge planting alters soil chemical and biological properties to increase potato yields in semiarid Northwest China

Fig. 3

Effects of plastic film mulching treatments for potato on a soil pH; b alkali-hydrolyzed nitrogen; c available phosphorus; d available potassium and e SOC. Different lowercase letters indicate significant differences for the same treatment on different sample dates (P < 0.05), and asterisks indicate significant differences among treatments on the same sample date (P < 0.05). FP, flat plot without film mulching; FPM, flat plot with film mulching; RPHM, ridge planting with half mulch; RPFM, ridge planting with full mulch

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