The field experiment was conducted in the Drinking Horse Spring experimental farm at the Shandong Academy of Agricultural Sciences, located in Jinan, Shandong Province (117°5′E, 36°43′N). The mean annual temperature is 14.7 °C with an annual sunshine duration of 2616.8 h and mean annual precipitation of 671.1 mm. The experiment was conducted from the years 2016 to 2018. The experimental crop is peanut “Huayu 22”. Six strain peanuts were planted in each pot with 20 kg soil, which was collected from the topsoil (0–20 cm) under continuous cropping peanut for five years. Each treatment has 30 pots for the experiment. Major soil properties before the experiment are listed in Table 3.
Physical and chemical properties of tested soil sample.
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