新型肥料施用对玉米季土壤硝态氮累积的影响

田间条件下,以封丘县潮土为研究对象,研究了在200 kg/hm~2供氮水平下施用3种新型肥料(金阳牌有机复合肥、金正大控释肥和红四方纳米控失肥)对玉米季不同土壤层次硝态氮运移的影响.结果表明,与对照不施肥处理相比.各肥料处理均能增加土壤硝态氮的累积,尤其对耕层(0-30 cm)影响最大.且其变化除了受肥料品种影响外,施肥时期、灌溉量、降雨量等外界因素也影响较大.研究还发现,3种新型肥料均有利于提高0-80 cm土壤硝态氮累积,其中以红四方纳米控失肥增加相对较多,有助于促进当季玉米利用,提高肥料利用率,可作为适宜该地区玉米季的肥料品种之一.

Effect of New Type Fertilizers Application on Accumulation of Soil Nitrate Nitrogen in the Maize Season

Under the field conditions, taking fluvo-aqnic soil as the experimental object soil in Fengqiu county,the effects of three new type fertilizers, I. E. Organic complex fertilizer Jinyang, Kingenta controlled release fertilizer (CRF) and Red Sifang controlled loss fertilizer (CLF), application on accumulation of nitrate nitrogen in different soil layers (0 — 30 cm, 30 — 80 cm, 80 — 120 cm and 120—180 cm) were studied with the same level of nitrogen application with 200 kg per hectare during summer maize season. Comparing with no nitrogen application, three fertilizers treatments increased accumulation of nitrate nitrogen in each soil layer, especially in topsoil (0 — 30 cm). Results showed that the accumulation of nitrate nitrogen in different soil layers not only related with the types of fertilizers but also with the other outer factors such as fertilizer application timing, irrigation amount, rain capacity, etc. The result also indicated that the accumulations of nitrate nitrogen in the 0 — 80 cm soil layer were increased by applying three fertilizers, especially CLF of Red Sifang having higher amount in later growing season of summer maize which helped corn to use and to enhance fertilizer utilization efficiency. In general, the Red Sifang CLF is one of more adapted type of in three fertilizers during maize season of Fengqiu region.