砂姜黑土区玉米氮磷钾吸收利用的基因型差异

Study on the Uptake and Utilization Efficiency of Nitrogen,Phosphorus and Potassium of Maize in Lime Concretion Black Soils

以郑单958、先玉335、郑单538、豫单606这4个品种为试验材料,在河南省西平县试验基地,通过2015、2016年的大田试验探讨玉米氮磷钾吸收利用的基因型差异,研究河南省砂姜黑土区玉米丰产高效精准施肥问题。研究表明,各玉米品种之间因基因型差异,对养分的肥效特性不同,进而造成玉米产量的差异。根据各品种的肥效特性进行针对性的因种施肥,郑单958和先玉335主要以钾肥为主,豫单606主要以补充氮肥为主,郑单538主要以磷肥为主。

To explore highly efficient sand ginger black soil area in Henan province maize precise fertilization,four varieties,Zhengdan958(ZD958),Xianyu335(XY335),Zhengdan538(ZD538),Yudan606(YD606),were used as experimental materials to explore genotypic differences in the uptake and utilization of nitrogen,phosphorus and po⁃tassium in maize through field trials in 2015 and 2016 at a test site in Xiping county,Henan province.The results showed that different maize varieties had different characteristics of nutrient fertilizer efficiency due to different gen⁃otypes,which resulted in the difference of maize yield.According to the fertilizer effect characteristics of each vari⁃ety,specific fertilization was carried out as follows:ZD958 and XY335 were mainly fertilized by potash fertilizer;YD606 was mainly fertilized by nitrogen fertilizer;ZD538 was mainly fertilized by phosphorus fertilizer.