讲究含氯化肥的施用方法
用含氯化肥做基肥时应提早深施并盖土,一般在播种或移苗前一个星期施用,施在种子或幼苗下侧,以距表土5~7厘米处为宜。作追肥时:采取穴施或条施,并与作物植株相距5~10厘米,切忌撒施。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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