Excreta collection techniques in nitrogen(N)balance trail developed from the techniques for ducks were used to study the net protein utilization of goose.
本文借鉴鸭排泄物收集方法对肉鹅的蛋白质净利用率进行初步研究。
2
The characteristics of nitrogen(N) and phosphorus(P) loss under 5 land use patterns were studied in Sunjia small red soil watershed during the Course of rain.
研究了次降雨过程中红壤小流域5种不同土地利用方式土壤N，P养分流失特征。
3
The total nitrogen(N) content was determined with Kjeldahl to study the influences of temperature, digesting time and sample dosage on the course of digesting wild H.