Effect of N Fertilizer on Growth and Yield of Cucumber and Optimum Application Rate of N in Greenhouse

A field experiment was conducted to study the effect of different N fertilizer application rate on cucumber growth,yield and economic benefit in second generation greenhouse of Ningxia.The results showed that the soil had less available phosphorus and nitrogen.Therefore,height,chlorophyll content,stem diameter and yield of cucumber were significantly affected by N application rate.81% of cucumber yield was relied on N fertilizer application rate.The reasonable application rate of N for maximum and economical yield production of cucumber was 720 kg/hm2 and 695 kg/hm2 respectively.