泗阳县玉米测土配方施肥试验

为明确测土配方技术在泗阳地区玉米生产过程中的实际效果，通过田间试验对玉米生育期、产量构成和效益等进行了对比分析。试验结果显示：采用14.8-9-8的肥料配比能显著提升玉米肥料利用率，提高产量和收益。相较常规施肥，测土配方施肥对玉米生育期影响较小，但玉米穗粒数和千粒重提升效果显著，分别提升了1.88%和3.89%；测土配方施肥的氮、磷、钾肥利用率和养分平均利用率分别为40.77%、28.02%、51.18%，相较常规施肥分别提升了11.55%、4.07%、21.46%，养分平均利用率提升了12.36%；测土配方施肥籽粒产量为9535.04kg/ha，相较常规施肥增产429.99kg，增产率为4.72%，纯收益每公顷提升1269.60元。

Maize soil testing formula fertilization experiment in Siyang County

In order to clarify the actual effect of soil testing and formulation technology in maize production in Siyang area, the growth period, yield composition and benefit of maize were compared and analyzed through field experiments. The results showed that the fertilizer ratio of 14.8-9-8 could significantly improve the fertilizer utilization rate, yield and income of maize. Compared with conventional fertilization, soil testing and formulated fertilization had little effect on the growth period of maize, but the grain number per ear and 1000-grain weight of maize were significantly increased by 1.88 % and 3.89 %, respectively. The utilization rate of nitrogen, phosphorus and potassium fertilizer and the average utilization rate of nutrients were 40.77 %, 28.02 % and 51.18 %, respectively, which were 11.55 %, 4.07 % and 21.46 % higher than those of conventional fertilization, and the average utilization rate of nutrients was increased by 12.36 %. The grain yield of formula fertilization by soil testing was 9535.04 kg / ha, which was 429.99 kg higher than that of conventional fertilization, with an increase rate of 4.72 %, and the net income increased by 1269.60 yuan per hectare.