脲铵氮肥施肥方式及用量对玉米产量及产量构成因素的影响

[目的]为摸清脲铵氮肥在玉米生产上的应用效果。[方法]以夏玉米为试验材料,通过田间小区试验,研究脲铵氮肥对玉米产量及产量构成因素的影响。[结果]脲铵氮肥肥效长,具有和尿素一样的增产效果,能明显改善玉米农艺性状和经济性状,增加产量。同时,脲铵氮肥养分减量40%施用(即只需使用纯氮60%的等量脲铵氮肥),就与尿素常规传统施肥方式取得相同的增产效果,投产比高,经济效益显著。[结论]该研究可为脲铵氮肥大面积推广应用提供科学的理论指导。

Effects of Urea Ammonium Chloride of Different Fertilization Patterns on Maize Yield and Yield Components

[Objective] To understand the application effects of urea ammonium chloride fertilizer on maize production. [Methods] A field plot experiment was conducted to study the effects of urea ammonium chloride of different fertilization patterns on summer maize yield and yield components. [Results] Urea ammonium chloride had a long fertilizer effect and the same yield-increasing effect with urea, which could im- prove the agronomic traits and economic traits of maize apparently and the applica- tion of urea ammonium chloride with nutrient reduction of 40% （namely just use urea ammonium chloride equaled 60% pure nitrogen）, had the same yield-increasing effect with urea of traditional fertilization patterns, and input-output ratio was high and the economic benefit was remarkable. [Conclusion] To provide scientific theoretical direc- tion for large area popularization and application of urea ammonium chloride.

玉米新品种云瑞505特征特性及轻简化栽培技术

[目的]对玉米新品种云瑞505特征特性及栽培技术进行研究总结。[方法]2013—2014年通过田间种植试验,对其栽培技术、产量及抗病性进行研究。[结果]总结出云瑞505特征特性及一套轻简化栽培技术。[结论]该技术可在云南省保山海拔1 750 m以下地区及气候类似地区大面积推广应用。

保山坝水稻“3414”肥料效应试验

通过对水稻"3414"3因素4水平肥效试验数据分析,利用测土配方施肥数据管理系统软件获得肥料效应函数方程,得出氮、磷、钾每公顷理论最佳施肥量。综合分析不同推荐施肥方法和施肥量,结合隆阳区当地农业生产实际,保山坝水稻氮、磷、钾建议推荐施肥量为纯N 303.3 kg/hm2、P2O5109.9 kg/hm2、K2O 124.6 kg/hm2。