单词 | basic slag |
例句 | In a natural state it is obtained from bones, guano and wood ashes; and in an artificial condition from basic slag or Thomas’s phosphate, coprolites and superphosphate of lime. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 7 "Horticulture" to "Hudson Bay" 2012-03-04T03:00:13.390Z Manuring with basic slag at the rate of from 5 to 10 cwt. per acre has been found to give excellent results on poor clays and peaty soils. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z If basic slag and kainit are given, autumn is the time, as their action is slow. The Book of Pears and Plums On the other hand, when the manure applied is of a slow-acting nature, such as bones or basic slag, its influence will probably be felt for a number of years. Manures and the principles of manuring The amount of effective lime in basic slag, as made by modern methods, is so small that its value is nearly negligible. Right Use of Lime in Soil Improvement Superphosphate has proved superior to bonedust or basic slag; sulphate of potash has not increased the yield, while nitrogenous fertilisers, such as dried blood or sulphate of ammonia, have proved either useless or harmful. Wheat Growing in Australia Nearly all the basic slag used as a fertilizer is imported from Germany, and usually contains 17 to 18 per cent of phosphoric acid. Crops and Methods for Soil Improvement Nitrate of soda must not be mixed with superphosphate, but it may be added to basic slag and the potash manures. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition This is the case, indeed, with many artificial manures, such as guano, bones, nitrate of soda, and basic slag. Manures and the principles of manuring There was also, said the report, traces of steel and phosphates, of which there is a combination known as basic slag, which the gardener had mentioned as being occasionally used. The Ashiel mystery A Detective Story On the other hand, such manures as bones, basic slag, and farmyard manure may exert an appreciable influence for a number of years. Manures and the principles of manuring The chemist's test which is fair for acid phosphate is admittedly not fair when used for basic slag. Crops and Methods for Soil Improvement Never mix sulphate of ammonia with basic slag or with lime, but it may be mixed with superphosphate and the potash manures. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition The same applies to basic slag, which contains a considerable quantity of free lime in its composition. Manures and the principles of manuring Further, it is highly inadvisable to mix superphosphates with basic slag, which contains a large percentage of both iron and free lime. Manures and the principles of manuring Insoluble phosphates, as we shall have occasion to see when discussing basic slag, have their best action on soils poor in lime and rich in organic matter. Manures and the principles of manuring There is evidence that basic slag favors clover. Crops and Methods for Soil Improvement Heavy ground should be dressed with seven pounds of basic slag in autumn and two pounds of sulphate of potash in spring. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition Third year, 4 cwt. basic slag or 3 cwt. superphosphate and 1 cwt. nitrate of soda. Manures and the principles of manuring This was done by adding to the super, basic slag, and coprolites, quantities of nitrogen and potash equal to those contained by the other manures. Manures and the principles of manuring Thus 2 cwt. of basic slag is equal to 1 cwt. of super. Manures and the principles of manuring Acid phosphate, basic slag, and bone are chief in this group. Crops and Methods for Soil Improvement Phosphoric acid, similarly, may exist in a soluble form, as it does in superphosphate of lime, or in an insoluble form, as it does in bones or basic slag. Manures and the principles of manuring Slow-acting manures are consequently best, such as basic slag or bones, which have been found to be of special value. Manures and the principles of manuring Bones, basic slag, or mineral phosphate ought to be applied, on the other hand, a long time before they are likely to be used. Manures and the principles of manuring It should never, for example, be used along with basic slag. Manures and the principles of manuring Quite recently, also, a large source of phosphoric acid has been opened up in the basic slag, a rich phosphatic bye-product obtained in considerable quantity in steel-works from the basic process of steel manufacture. Manures and the principles of manuring |
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