陇东地区甘蓝水肥一体化试验研究

Experimental Study on the Integrated Management of Water and Fertilizer in Cabbage in Longdong Region

为明确甘蓝水肥一体化技术在陇东地区露地生产中的应用及其可行性,以甘蓝品种‘春望’为试验材料,研究传统灌溉施肥(CK)、水肥一体化和水肥一体化减肥处理对露地甘蓝生长、产量及品质的影响。结果表明,在相同施肥量的情况下,水肥一体化比常规灌溉施肥增产23738 kg/hm^(2),增产率为21.0%;在追肥减量20%时,比常规灌溉施肥增产16866 kg/hm^(2),增产率为14.9%。水肥一体化比常规灌溉节水650 m3/hm^(2),节水率39.3%。综合分析可知,水肥一体化可以显著促进甘蓝生长,提高产量,改善品质,有效降低化肥施用量,节约水资源,可在陇东地区露地甘蓝生产中进行推广。

To clarify the application and feasibility of integrated management of water and fertilizer in open field production of cabbage in Longdong region,the cabbage variety‘Chunwang’was used as the experimental material to study the effects of traditional irrigation and fertilization(CK),integrated management of water and fertilizer,integrated management of water and fertilizer+reduction of fertilizer treatment on the growth,yield,and quality of open field cabbage.The results showed that under the same fertilization amount,integrated management of water and fertilizer increased yield by 23738 kg/hm^(2) compared to CK,with a yield increase rate of 21.0%.When reducing the amount of topdressing by 20%,the yield increased by 16866 kg/hm^(2) compared to CK,with a yield increase rate of 14.9%.The integrated management of water and fertilizer saved 650 m3/hm^(2) of water compared to CK,with a water-saving rate of 39.3%.Comprehensive analysis showed that the integrated management of water and fertilizer could significantly promote the growth of cabbage,increase yield,improved quality,effectively reduce fertilizer application,save water resources,and could be promoted in the production of open field cabbage in Longdong region.