Copper, zinc and nitrogen for wheat following clover ley on brown gravelly loamy sand over consolidated ironstone country at Kondinin

Copper, Zinc and nitrogen required for maximum grain yield of wheat following clover ley grown on brown gravelly loamy sand over consolidated ironstone铜（Copper）、锌（Zinc）与氮（nitrogen）是在固结铁矿石层之上的棕色砾质壤质砂土上种植的三叶草轮作草地后茬小麦实现最高籽粒产量所必需的营养元素。