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为探讨外源NO（SNP为供体）对50 μmol/L铜、镉毒害的缓解效应，采用营养液培养方法，研究了不同程度的铜、镉毒害（5 μmol/L和50 μmol/L）对番茄幼苗生物量、根系活力、硝酸还原酶、光合特性及生物膜ATPase、H+-PPase等功能蛋白酶活性的影响。结果表明，铜、镉胁迫显著抑制番茄生长。随处理浓度增加，番茄根系活力、硝酸还原酶活性显著降低，番茄长势越差; 铜、镉胁迫对根系离子吸收...
Winter Annual Cover Crops in a Virginia No-till Cotton Production System: II. Cover Crop and Tillage Effects on Soil Moisture, Cotton Yield, and Cotton Quality
Virginia No-till Cotton Production Winter Annual Cover Crops
2008/5/19
Winter annual cover crops could help control soil erosion problems on sloping Piedmont soils in a no-till cotton (Gossypium hirsutum L.) production system. Field experiments were conducted from 1995 t...