搜索结果: 1-2 共查到“植物保护学 organic farming”相关记录2条 . 查询时间(0.094 秒)
Annual and seasonal changes in mineral contents (Ca, Mg, P, K and Na) of grazed clover-grass mixtures in organic farming
organic farming dairy cows pastures Trifolium repens Trifolium pratense Trifolium hybridum herbage mineral concentrations calcium magnesium phosphorus potassium sodium
2010/8/10
A grazed field experiment was established in 1995 to evaluate alsike clover (Trifoliun hybridum L.), red clover (Trifolium pratense L.) and white clover (Trifolium repens L.) in clover-grass mixtures ...
Quantitative and qualitative evaluation of weed seed bank in organic farming
organic farming weed seed bank manure
2010/1/13
The influence of organic farming on weed seed bank under two different crop rotations: with and without manure, was investigated in an organic farm of Kazliskiai over the period of 1997–2002. Proven b...