单词：crop rotation system
单词：crop rotation system 相关文章
Dale Aden has been farming most of his life, just like his father, and his fathers father. I am a third generation farmer on this land. His land is in Okabena, Minnesota, right along the Okabena creek, where for many years, Aden watched helplessly a
国家地理2008年
AGRICULTURE REPORT - Indian Ban on Lentil Exports Causes Price JumpBy Mario Ritter Broadcast: Tuesday, August 15, 2006 This is the VOA Special English Agriculture Report. Classic lentils, left, and re
2006年慢速英语（八）月
Researchers get same yields with fewer fertilizers, pesticides Steve Baragona | Washington, DC 18 May 2010 Fossil energy use was compared among different crop rotation systems in a field experiment conducted between 2003 and 2008 in Boone Co., Iowa R
VOA标准英语2010年(五)月
Scientists around the world predict that climate change will have dramatic effects on agriculture in the coming decades. So, too, will pests and pesticides, the loss of species and the need to increase food production for a growing population. Resear
VOA标准英语2010年(十)月
Dale Aden has been farming most of his life, just like his father, and his fathers father. I am a third generation farmer on this land. His land is in Okabena, Minnesota, right along the Okabena creek, where for many years, Aden watched helplessly as
自然百科2008年
对于《Seventeenth Century Dutch Agriculture》这篇来说，很多童鞋应该并不陌生。这篇文章是托福阅读TPO23套的第2篇，但是在这种难度适中的文章当中，依然会藏有杀机!今天我们就来一起找找杀机在哪
托福英语