| 摘要 |
<p>This device, which is fitted to a liquid manure tank, comprises an on-board computer (9), a spreading electrovalve (7) with adjustable flow rate, a device (8) for measuring the forward speed of the liquid manure tank, reservoirs (3, 4) containing reactive products capable of reacting with the ammoniacal nitrogen contained in the liquid manure, means (2, 20) of drawing liquid manure from the tank, a sealed reaction vessel (5), a pressure sensor (6) which supplies the computer (9) with a signal depending on the pressure of the gaseous nitrogen released by the reaction, the computer (9) being programmed to adjust the spreading flow rate taking account of this signal and as a function of the forward speed of the tank, in such a way that the liquid manure is spread with a predetermined and substantially constant nitrogen content per unit area. <IMAGE></p> |
