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小麦幼苗长到3—4片叶子时,根茎上的腋芽开始发育并长出土外而形成新茎,这种现象叫做分蘗。发生分蘖的节叫做分蘗节。分蘗节是发生分蘖和次生根的地方,同时也是贮存养分的场所,分蘗节过深过浅对小麦的生长发育都不利,特别是过浅时,由于土壤表层水分较少,会限制分蘗和次生根的发育。此外,还会使冬小麦在越冬时遭受冻害,使春小麦遭受旱害,但过深时则对分蘖不利。影响分蘖节深浅的条件主要是播种深度和播种期,在生产上要通过适当增加播深和采取合理密植、适期播种等措施来调节分蘗节的深度。
When the wheat seedlings grow to 3-4 leaves, the axillary buds on the roots start to grow and grow out of the soil to form new stems. This phenomenon is called tillering. The tillering node is called the tiller node. Tillers are the places where tillers and secondary roots occur and are also the places where nutrients are stored. If the tiller nodes are too shallow, the growth and development of wheat will be unfavorable. Especially when the soil is too shallow, the tillering and secondary times will be limited Rooting development. In addition, winter wheat is also subject to frost damage during wintering, which can cause drought to spring wheat, but it is disadvantageous to tillering when it is too deep. Affect the depth of tillering Festival conditions mainly sowing depth and sowing time, in the production should be appropriate to increase sowing and to take reasonable close planting, sowing and other measures to adjust the depth of tillering Festival.