| 摘要 |
<p>Fertilisers containing a mixture of sodium nitrate and a complex humus such as manure, dung or vegetable matter that may have been composted, are new. The fertilisers pref. also contain natural phosphates, magnesium oxide, sulphur, magnesium sulphate, calcium oxide, copper, sylvinite, trace elements, brown algae, and calcio-magnesium algae such as lithiothamne or marl. The pref. compsn. contain the following, in dry weight per cent: 10.85 natural nitrates, 10-80 vegetable or animal matter which may have been composted, and 5-60 natural phosphates. The fertilisers are rich in microbial matter and may be improved or adapted to meet the specific needs of the soil.</p> |
