看叶管理可以概括为一句话“三叶间,四叶定,五叶、六叶、七叶控,八叶、九叶肥水攻,大喇叭旧时期狠加工”。三叶间:间苗时要留壮去弱、留纯去杂、留扁去圓,叶片要与行垂直。四叶定:即要及时定苗,避免根系间争肥、争水、争光。五叶、六叶、七叶控:此时是蹲苗的重 See leaf management can be summed up as a sentence “cloverroom, four-leaf set, five-leaf, six-leaf, seven-leaf control, eight leaves, nine leaves fertilizer attack, loudspeaker relentless processing in the old era.” Interlopen: thinning to be strong to weak, leaving pure to miscellaneous, stay flat to round, with leaves vertical lines. Four leaf set: that is, in time to Dingmiao, to avoid fattening between the roots, Zhengshui, Zhengguang. Five leaves, six leaves, leaves control: At this point is the weight of Dunmiao