the methods to utilize the liquid-preserved acetic acid bacteria during yielding vinegar were established, and the main factors affecting its acid yield were studied in this paper.
试验确定了液体保藏醋酸菌的应用方法,并对影响其产酸水平的因素进行了初步研究。
effects of waterlogging at filling stage on n, p, k nutrition metabolism and yield were studied applying simulation waterlogging method.
effects of natural factors and livestock capacity on forage yield were studied in native grassland over 5 counties of hainan prefecture, qinghai province, china.
以天然草地为研究对象,对海南州5个县天然草地的牧草产量与主要自然因素、载畜量的影响进行了研究分析。
the synthesis method of quinalphos by the process of compound phase transfer catalyst (ptc)and the factors affecting synthesis yield were studied in this paper .
报导了采用复合相转移催化剂合成喹硫磷,并研究了各种因素对合成收率的影响。
abstr: the effects of biochar on maize dry matter accumulation, distribution and maize yield were studied by a plot field experiment.