Attapulgite is widely used as a crop nutrient in ecological agriculture.To investigate the effects of attapulgite combined with compound fertilizer on the quality improvement and yield advantage of different potato varieties under various rain-fed agriculture patterns in the northwest region,six treatments were established using'Dingshu 3','Atlantic',and'Dingshu 6'as experimental materials.Control 1(CK1)involved flat film mulching combined with compound fertilizer,while control 2(CK2)employed half-film ridging combined with compound fertilizer.Potato yield,marketable tuber percentage,and tuber quality were assessed using a random block arrangement method.Under similar cultivation conditions,the yield increased proportionally to attapulgite application rate.Notably,both total yield and marketable yield were obviously higher under half-film ridging pattern compared to flat film mulching pattern.Furthermore,compared to the control treatments(CK1 and CK2),both flat film mulching and half-film ridging resulted in a significant increase in the number of tubers per plant.Additionally,when employing half-film ridging cultivation pattern instead of flat film mulching cultivation pattern,there was an observed increase in both the number of tubers per plant and the marketable tuber percentage.Half-film ridging,combined with application of 1 200 kg/ha of attapulgite and 450 kg/ha of compound fertilizer resulted in increases ranging from 5.16%to 75.65%for dry matter content,starch content,protein content,and vitamin C content in potato tubers.Moreover,the use of attapulgite demonstrated notable improvements in mineral elements such as iron by 14.62%,zinc by 28.14%,calcium by 12.10%,and magnesium by 30.74%when compared to the control treatment(CK2).Compared with conventional cultivation pattern,the potato yield,marketable tuber percentage,number of tubers per plant,and tuber quality could be enhanced by utilizing the half-film ridging cultivation pattern combined with application of 1 200 kg/ha of attapulgite and 450 kg/ha of compound fertilizer.
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