一、摘心打叶对于出现徒长或有贪青晚熟趋势的植株,应在初花期或盛花期进行摘心。将主茎顶端摘去2厘米左右、以控制其营养生长。同时,也可以采取打叶的方法、在植株封行后,用锋利的铁片将行间重叠的叶片削去一部分。以改善田间的通风透光条件。二、根外追肥在大豆开花株数达10%左右时,每亩追施硫酸铵 First, topping the leaf for the appearance of leggy or late green turmeric trend plants, should be at the beginning of florescence or full bloom. The top of the main stem picked 2 cm or so, in order to control their vegetative growth. At the same time, you can also take the method of playing leaves, after the plant seal, with sharp iron pieces will be cut off part of the line between the leaves. To improve the ventilation and light field conditions. Second, the top dressing outside the soybean flowering plants up to about 10%, per acre topdressing ammonium sulfate