Bio:
Email: kgsunnky@163.com
孙克刚(1965—),男,硕士,三级研究员,硕士生导师,主要从事植物营养与施肥和精准农业养分管理与施肥方向的研究;kgsunnky@163.com
为考察普通尿素与纳米氢氧化镁掺混对冬小麦产量和土壤硝态氮含量的影响,开展了田间小区试验。试验共设常规施肥对照(CK)、普通尿素(T1)、普通尿素+0.3%(质量分数,下同)纳米氢氧化镁(T2)、普通尿素+0.4%纳米氢氧化镁(T3)、普通尿素减施20%+0.3%纳米氢氧化镁(T4)等5个处理。结果表明:普通尿素与纳米氢氧化镁掺混处理的冬小麦产量均高于CK处理的;纳米氢氧化镁添加量相同时,冬小麦产量随普通尿素施用量的增加而增加;普通尿素施用量相同时,冬小麦产量未随纳米氢氧化镁添加量的增加而增加,说明本地区添加0.3%纳米氢氧化镁是适宜的;T4处理的冬小麦产量与T1处理的无显著性差异,说明普通尿素与纳米氢氧化镁掺混可以减少氮肥的施用量;与CK、T1处理相比,普通尿素与纳米氢氧化镁掺混均不同程度地降低了0~100 cm土壤的硝态氮含量。
In order to investigate the effects of blending common urea with nano magnesium hydroxide on winter wheat yield and soil nitrate nitrogen content, a field plot experiment is conducted. The experiment included five treatments: conventional fertilization control (CK), common urea (T1), common urea+0.3% (mass fraction, the same below) nano magnesium hydroxide (T2), common urea+0.4% nano magnesium hydroxide (T3), and common urea reduced application of 20%+0.3% nano magnesium hydroxide (T4). The results show that the yield of winter wheat treated with the mixture of common urea and nano magnesium hydroxide is higher than that treated with CK. When the amount of nano magnesium hydroxide added is the same, the yield of winter wheat increases with the increase of common urea application. At the same application rate of common urea, the yield of winter wheat does not increase with the increase of nano magnesium hydroxide addition, indicating that adding 0.3% nano magnesium hydroxide is suitable in this region. There is no significant difference in wheat yield between T4 treatment and T1 treatment, indicating that the mixture of common urea and nano magnesium hydroxide can reduce the amount of nitrogen fertilizer applied. Compared with CK and T1 treatments, the blending of common urea and nano magnesium hydroxide reduced the nitrate nitrogen content in the 0-100 cm soil to varying degrees.