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通过在麦田土壤施用控释氮比例(CNR)不同的缓控释掺混肥料,研究其对小麦生长和土壤性状的影响。结果表明,CNR分别为25%、40%的低氮处理(23-11-6)能显著增加小麦生物产量,二者与普通掺混肥处理(添加颗粒有机肥,MF)均能显著降低土壤体积质量,提高土壤持水性;MF处理小麦产量显著高于其他各处理;对照处理小麦植株全磷含量显著高于其他各施肥处理,说明不施肥条件下,能够促进小麦对磷素的吸收。
The effect of different controlled release fertilizers on wheat growth and soil properties was studied by applying controlled-release nitrogen (CNR) in wheat field soils. The results showed that CNR were 25% and 40%, respectively. The low nitrogen treatment (23-11-6) significantly increased the biomass of wheat. Both of the two treatments could significantly reduce soil fertility (addition of particulate organic fertilizer and MF) Volume and quality of the soil, and the water holding capacity of the soil was increased. The yield of wheat treated with MF was significantly higher than that of other treatments. The content of total phosphorus of the wheat treated with the control was significantly higher than that of other fertilizers, indicating that the phosphorus uptake by wheat could be promoted under the condition of no fertilization.