摘要
Abstract
The purpose of this experiment is to study the effects of different nitrogen fertilizer application rates on the growth,yield,quality,soil quality,and economic benefits of chicken feather vegetables through a field experiment with"2+X"total nitrogen fertilizer control.The experiment set up five treatments:nitrogen free zone,75%optimized nitrogen,optimized nitrogen zone,125%optimized nitrogen,and habitual fertilization.The results showed that moderate application of nitrogen fertilizer can significantly promote the increase of plant height,stem thickness,and chlorophyll content in chicken hair vegetables.The optimized nitrogen zone(16 kg/mu)showed excellent performance in yield(2733 kg/667 m2)and fertilizer partial productivity(616.7 kg/kg),achieving a balance between high yield and efficient nutrient utilization.Although the 125%optimized treatment had the highest yield(2867 kg/667 m2),there were risks of soil acidification,salt accumulation,and decreased fertilizer utilization efficiency.The economic benefit analysis shows that the net income from the optimized nitrogen zone reaches 4044 yuan/667 m2,the input-input ratio is reasonable,and the comprehensive benefit is the best.Therefore,it is recommended to adopt an optimized nitrogen area fertilization plan in the production of chicken cabbage in facilities to achieve coordinated improvement of high crop yields,efficient fertilizer fertilizers,soil health and economic returns.关键词
"2+X"氮肥总量控制/设施蔬菜/产量/经济效益/土壤质量Key words
"2+X"total nitrogen fertilizer control/protected vegetable/yield/economic benefit/soil quality分类
农业科技
