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(一)小麦的需水规律及新疆麦田的耗水特点1.小麦的需水规律小麦的需水规律和各生育期的耗水特点与当地的气候条件密切相关。从新疆南北疆各地资料综合分析,耗水量最多是拔节和灌浆两个时期。从小麦一生中总的耗水规律看,冬小麦越冬前的耗水量,约占总耗水量的20%,返青到抽穗为30%,抽穗后到成熟为30%。这种规律在不同产量水平下都是一致的。掌握这一规律是合理灌溉,制定灌水定额的依据。
(A) the law of water demand of wheat and the water characteristics of wheat fields in Xinjiang 1. Wheat water requirements Wheat water requirements and water consumption characteristics of each growing period are closely related with the local climatic conditions. From Xinjiang, northern and southern Xinjiang a comprehensive analysis of the data around, the water consumption is the most jointing and grouting two periods. From the general rule of wheat water consumption in the lifetime, winter wheat water consumption before winter, accounting for about 20% of the total water consumption, returning to the heading of 30%, after heading to maturity of 30%. This law is consistent at different production levels. Grasp this rule is a reasonable irrigation, irrigation quota basis.