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以奎屯４号为材料，研究了北疆棉区冬小麦苗期、扬花期根系在土体中的分布状况；扬花期根系在土体不同深度的根量及其比例。从根系发育、分布规律中看出，冬麦虽属须根系，但在出苗后３３ｄ，根系不仅布满耕层，而且深达１４０ｃｍ。扬花期大量根系分布在３～６０ｃｍ，占总根量的９０％左右，根系入土深度达１６０ｃｍ。因此，冬麦要重施基肥。对于棉田轮作倒茬，改良土质，尤其是粘质土壤，冬麦是宜选作物。
Taking Kuytun No.4 as the material, the distribution of root system of winter wheat at the seedling stage and the flowering stage in the northern Xinjiang cotton area was studied. The amount and proportion of roots at the flowering stage at different soil depths were studied. From root development and distribution, we can see that although winter wheat is fibrous root system, 33 days after emergence, the root system is not only covered with plow but also deep as 140cm. A large number of flowering flowering roots distributed in 3 ~ 60cm, accounting for about 90% of the total amount of roots into the soil depth of 160cm. Therefore, winter wheat to heavy base fertilizer. Crop rotation for the cotton field, soil improvement, especially clay soil, winter wheat is a suitable crop.