摘要
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。
It was measured that grain formation and milking intensity of different winter wheat strains grown in different sandy soil and under different irrigating and fertilizing conditions.The results showed that the milking period of winter wheat grown in sandy land is short,(15-17 days in general),and its milking intensity is great.But it takes fewer days (about 30 days)from flowering to ripening and its thousand grain weight is low.Per unit area dry weight of boot leaf three upper internodes has a significant negtive correlaton with thousand grain weight,while those of the second and third inverse leaves have no significant corretation with thousand grain weight.It is difficult to enhance filling intensity as increasing irrigating amount. Therefore,low irrigating quota and high irrigating frequency should be taken.Application of organic manure can prolong the filling period and increase the filling intensity and thousand grain weight.
出处
《华北农学报》
CSCD
北大核心
1997年第2期59-64,共6页
Acta Agriculturae Boreali-Sinica
基金
国家"八五"重点科技攻关专题
关键词
沙地
小麦
灌浆
千粒重
水肥条件
Sandy land
Wheat milking
Thausand grain weight
Water and fertilizer conditions
