天然沸石用量对玉米产量及氮肥利用率的影响

Effects of Different Natural Zeolite Rates on Maize Yield and Nitrogen Use Efficiency

以耐密玉米品种鑫鑫1号为试验材料,采用小垄超密植（密度93 000株·hm^-2）栽培模式,减少15%的氮肥用量,施用天然沸石做氮肥增效剂,研究不同氮肥增效剂用量对玉米产量和氮肥利用率的影响。结果表明,天然沸石做氮肥增效剂可以提高百粒重,降低倒伏率和空秆率从而提高超密植栽培模式下的玉米产量,与常规栽培相比可增产17.6%-38.1%;同时可提高氮肥利用率13.91-19.15个百分点。在牡丹江砂壤土地区,玉米超密植栽培模式下,沸石施用量为176 kg·hm^-2时增产增收效果显著,氮肥利用率提高明显。

The yield and nitrogen use efficiency of maize under super dense planting conditions（93 000 plantsper hectare） were investigated, which using the dense maize variety xinxin1, reducing 15% dosage of nitrogen fertilizer and using natural zeolite as nitrogen fertilizer synergist. The results showed that using natural zeolite as nitrogenfertilizer synergist could improve 17.6%-38.1% of maize yield and 13.91-19.15 percentage of nitrogen use efficiency in super dense planting conditions compared with conventional cultivation, due to the increase of hundredgrains weight, reduction of lodging percentage and blank-stem rate. The output and benefit of maize, and nitrogenuse efficiency were increased significantly by applying natural zeolite at 176 kg·hm^- 2under super dense plantingconditions in sandy silt of Mudanjiang.