采用多种作物、多种土壤进行盆栽和大田试验表明,作物的磷肥肥效既和土壤因子有关,也和作物因子有关,而作物因子从属于土壤因子。......

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A field study was conducted to investigate the effects of leguminous crop cultivation on nitrousoxide (N2O) emissions fr......

草地放牧的牛羊需要吃饱,也需要吃好,以快速增重,达到缩短出栏期、增加牲畜生产、减少对草原资源的消耗、保护草原的目的.在放牧的......