| Improving the efficiency of water and fertilizer production is an important task to realize the efficient utilization of soil and water resources.Based on the effects of conventional water irrigation and application of Fe,Mg and Zn with crop growth,in this paper,the effects of activated water irrigation and application of Fe,Mg and Zn on the growth,element accumulation and soil physicochemical properties of Pakchoi were studied,which revealed the influence ways of activated water irrigation and application of Fe,Mg and Zn on the growth of Pakchoi.The main conclusions were as follows:(1)Compared with conventional water irrigation,de-electronic water irrigation had the most significant effect on fresh weight when the treatment without the addition of Fe-Mg-Zn.Compared with conventional water irrigation,when the treatment without the addition of Fe-Mg-Zn,the de-electronic water irrigation promoted the contents of nitrate nitrogen,ammonium,organic carbon,available magnesium,available zinc and available phosphorus in soil,it could promote the accumulation of total nitrogen,total carbon,total magnesium and total zinc in Pakchoi,that significantly improve the plant height and dry weight of Pakchoi,and significantly promote the growth of aboveground fresh weight of Pakchoi.Soil nitrate and available magnesium were the main factors affecting fresh weight in soil indexes.(2)Compared with conventional water irrigation,magnetized water irrigation had the most significant effect on fresh weight when iron fertilizer was 25 mg/kg.When applying iron fertilizer of 25 mg/kg,magnetized water by increasing the contents of nitrate nitrogen,organic carbon and available iron in soil,could promote the accumulation of total nitrogen and total carbon,that promote plant height and significantly improve dry weight of Pakchoi,and significantly promote the growth of fresh weight of Pakchoi.Soil nitrate was the main factors affecting fresh weight in soil indexes.(3)Compared with conventional water irrigation,magnetized water irrigation had the most significant effect on fresh weight when magnesium fertilizer was not applied.When magnesium fertilizer is not applied,magnetized water irrigation by increasing the contents of nitrate nitrogen,ammonium nitrogen,organic carbon,available magnesium and available phosphorus in soil,it could promote the accumulation of total nitrogen,total carbon and total phosphorus,that significantly improve the plant height and dry weight of Pakchoi,and significantly promote the growth of fresh weight of Pakchoi.Soil nitrate nitrogen and available magnesium were the main factors affecting fresh weight in soil indexes.(4)Compared with conventional water irrigation,magnetized water irrigation had the most significant effect on fresh weight when zinc fertilizer was 60 mg/kg.When applying zinc fertilizer of 60 mg/kg,magnetized water irrigation by increasing the contents of nitrate nitrogen,organic carbon,available phosphorus and available zinc in soil,it could promote the accumulation of total nitrogen and total carbon,reduce the accumulation of total zinc,that significantly improve the plant height and dry weight of Pakchoi,and significantly promote the growth of fresh weight of Pakchoi.Soil nitrate nitrogen,organic carbon and available zinc were the main factors affecting fresh weight in soil indexes. |
