ISBN: 9787802230330 - 高产玉米良种及栽培关键技术 (1 risultati)

paperback. Condizione: New. Paperback. Pub Date: 2006 Pages: 150 in Publisher: China Three Gorges Press. China's agricultural structure adjustment made significant progress. the rural economy developed steadily. However. the development of agriculture and rural economy. there are still some problems. prominent farmers' income is difficult still. If you do not increase the farmers 'income. not only affect the farmers' living standards improve. but also restricts the development of the rural economy. affecting the entire .…