硼钼镁对菜心产量及养分吸收的影响

以菜心为试材,研究了硼钼镁不同施肥水平对菜心产量和养分吸收的影响。研究结果表明,施用硼钼镁能够提高菜心的产量和经济效益,当B,Mg,Mo施用量分别为0.03,0.032,1.741 kg/667 m2时,效益最大,增幅分别为14.27%,13.1%,14.51%。施硼可促进菜心对N,P,K及B的吸收,但过量的硼会抑制菜心对P的吸收;施钼可以提高可食部分和全株对于N,P,K及Mo的吸收,降低菜心不可食部分对于N,P,K的吸收;施镁促进菜心对N,K,Mg的吸收,促进可食部分P的吸收的同时降低不可食部分及全株P的吸收,高浓度的Mg会降低菜心可食部分对于N,Mg的吸收。

Effects of Boron, Molybdenum and Magnesium Nutrition on Yield and Nutrients Uptake of Flowering Chinese Cabbage

Effects of B,Mo and Mg on yield and nutrient uptake of Flowering Chinese cabbage was studied through experiment of different fertilizer levels.The results showed that fertilize B,Mo and Mg can increase yields and economic profit of Flowering Chinese cabbage.It got the best economic benefit when the amount of B,Mo,Mg were 0.03 kg/667 m2,0.032 kg/667 m2,1.741 kg/667 m2,meanwhile,the amplification were 14.27%,13.1%,14.51%.Fertilizing B could add absorption of B and promote the absorption of N,P,K,but excessive B could restrain the absorption of P.Fertilizing Mo could add absorption of Mo and promote the absorption of N,P,K in esculent parts of Flowering Chinese cabbage,and reduce the absorption of N,P,K in inesculent parts of Flowering Chinese cabbage.Fertilizing Mg could add absorption of Mg and promote the absorption of N,K of Flowering Chinese cabbage;Fertilizing Mg could promote the absorption of P in esculent parts of Flowering Chinese cabbage,at the same time,it could reduce the absorption of P in inesculent parts and total of Flowering Chinese cabbage;Mg of high concentration could depress the absorption of N,Mg in esculent parts of Flowering Chinese cabbage.