播种量和播种期对上海绿肥油菜生物产量及养分积累的影响
蒋美艳1,李秋红2,李延莉1,江建霞1,杨立勇1,周德平1,吴淑杭1,王伟荣1*
Effects of sowing rate and sowing date on biomass and nutrient accumulation of green manure rape in Shanghai
上海农业学报 . 2021, (1): 35 -38 .