【摘要】 对豫东平原３种质地土壤的水热状况和冬小麦籽粒生长特征进行了研究．结果表明，冬小麦籽粒生长阶段，粘壤土５ｃｍ处的日平均温度最低，为１８．３℃，砂壤土最高，为１９．５℃，中壤居中，为１９．１℃．３种土壤的含水量大小顺序为粘壤＞中壤＞砂壤，粘壤土上小麦籽粒灌浆时间最长，千粒重最高，分别为３８ｄ和４５．５ｇ，砂壤土小麦籽粒灌浆时间最短，千粒重最低，分别为３３ｄ和４２．４ｇ，中壤土小麦２项指标居中，分别为３６ｄ和４３．１ｇ．高产栽培条件下，粘壤土冬小麦产量最高，为８２５３ｋｇ·ｈｍ－２，中壤次之，为７９８０ｋｇ·ｈｍ－２，砂壤最低，为７６１７ｋｇ·ｈｍ－２更多还原

【Abstract】 Studies on the hydrothermal regime of three soils with different texture in East Henan Plain and the characteristics of grain formation of winter wheat show that during grainfilling stage of wheat, the average daily temperature at 0～5 cm layer of clay loam, loam and sandy loam soils is respectively 18. 3, 19. 1 and 19. 5℃. Their moisture content is in the order of clay loam>loam>sandy loam. The duration of grain-filling stage,thousandgrain weight and grain yield are respectively 38 days, 45. 5 g and 8253 kg·hm-2 on clay loam soil;33 days,42. 4 g and 7617 kg·hm-2 on sandy loam soill and 36 days,43.1 gand 7 980 kg·hm-2on loam soil.更多还原