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对不同品种、不同砂土类型和不同水肥条件的冬小麦籽粒形成及灌浆强度测定表明,沙地冬小麦灌浆特点主要表现为灌浆期短(一般15~17天),灌浆强度较高,但开花至成熟历时天数少(30天左右),千粒重低。小麦旗叶单位面积干重与千粒重呈极显著负相关;倒二、倒三叶单位面积干重与千粒重相关不显著;茎秆上部三个节间单位面积干重与千粒重均呈极显著负相关。沙地小麦增加灌水量,难以显著提高灌浆强度,灌溉应做到少量多次。增施有机肥料,能够延长灌浆时间,提高灌浆强度,增加千粒重
The grain filling and grain filling intensity of winter wheat cultivars with different varieties, different sand types and different water and fertilizer conditions showed that the filling characteristics of winter wheat in sandy land were mainly characterized by short filling period (usually 15-17 days), high grouting intensity but flowering till maturity Longer days (less than 30 days), a thousand low weight. The dry weight per unit area of wheat flag leaf had a significantly negative correlation with 1000-grain weight. The dry weight per unit area of the second and third leaves did not correlate with 1000-grain weight. The dry weight per unit area of the upper three internodes was extremely significantly negatively correlated with the 1000-grain weight . Sandy wheat increased irrigation, it is difficult to significantly improve the grouting strength, irrigation should be done a small number of times. The application of organic fertilizer, to extend the filling time, improve grouting strength, increase 1000-grain weight