本文采用室内注柱模拟的方法,研究了风化煤用量对沙化土壤保持水分及氮磷钾养分的影响.结果表明:沙土中添加一定比例的风化煤后,水......

Water-conserving membrane is a new material of improving sandy soil. It is based on the rule that a compound with organi......