菌肥与氮磷肥配施对覆膜马铃薯抗旱生理指标及产量的影响

Effects of Bacterial Manure and Nitrogen and Phosphorus Fertilizer Combination on Drought Resistance Physiological Indexes and Yield of Potato under Plastic-Mulching

为探究微生物菌肥与氮磷肥配施对半干旱地区覆膜马铃薯抗旱生理指标及产量的影响,以马铃薯品种克新1号为供试材料,开展微生物菌肥与氮磷肥配施的试验研究。结果表明:施入微生物菌肥可以提高根际土壤含水量和根系活力,降低马铃薯叶片的丙二醛含量、游离脯氨酸含量、超氧化物歧化酶和过氧化物酶活性。处理T_1(尿素37.5kg/hm^2+磷酸二铵225kg/hm^2+微生物菌肥750kg/hm^2)是最优处理,较CK(尿素37.5kg/hm^2+磷酸二铵225kg/hm^2)增产21.05%。菌肥与氮磷肥配施可缓解干旱对马铃薯生长发育的影响,提高马铃薯产量及经济效益。

A field experiment was conducted to study the effects of mixed application of bacterial manure with nitrogen and phosphorus fertilizers on drought resistance physiological indexes and yield of potato under the condition of covering plastic film using Kexin 1 as the experimental cultivar. Results showed that bacterial manure could improve rhizosphere soil moisture content and root activity, but decrease the content of MDA and Pro, and activities of SOD and POD. T,（urea 37.5kg/hm2＋diammonium phosphate 225kg/hm2＋bacterial manure 750kg/hm2） was the best treatment which increased yield by 21.05% than CK （urea 37.5kg/hm2＋diammonium phosphate 225kg/hm2）. Mixed application of bacterial manure and nitrogen and phosphorus fertilizers could alleviate the impact of the drought on potato growth and development, improve tuber yield and economic benefit.