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在小麦和大麦的品种中,有许多是有芒的.芒是每朵小花外稃顶端延长形成的刺状物.芒有什么功用呢?据实验所知,麦芒与麦粒的重量呈正相关.当大麦或小麦抽穗开花,时在田间选10多个穗,用剪刀把麦穗一边所有小花的外稃顶端的芒完全剪去,把另一边所有的芒留下作为对照.再选10多个穗,把一边的芒剪去一半长度,而留下另一边的芒作为对照.当麦子成熟时,剪下实验的麦穗.把芒完
Among the varieties of wheat and barley, there are many of them, and Mount is the thorn formed by the extension of the top of each floret. What is the function of Mount? According to the experiment, there is a positive correlation between the weight of wheat and the weight of the grain. When barley or wheat are heading for flowering, select more than 10 spikes in the field, scissors cut off the top of the hilus of all the flowers with scissors and leave all the other leaves on the other side as a control. Spike, cut one side of the length of the mango half, leaving the other side of the mango as a control .When the wheat matures, cut off the experimental ears.