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小麦灌溉的必要性小麦灌溉的必要性可从以下几方面认识:1、小麦生育期的降雨量严重不足,必须靠灌溉来补充。水、肥、气、热是作物生长的四大基本要素。水为四者之首,欲使作物得到稳定高产,必须首先满足作物对水份的需求。然而气象统计资料表明,淮北地区小麦生长期的降雨量与小麦需水量,在量值和时空分布上均不匹配。例如濉溪县小麦全生育期多年雨量均值为296.8mm,比安徽省水科所测定的小麦全生育期需水量的上限(500mm,包括播前水80mm)差200mm,比其下限(430mm)差130mm。据濉溪县气象
Necessity of Irrigation of Wheat The need for irrigation of wheat can be understood from the following aspects: 1. There is a serious shortage of rainfall during the growth of wheat and it must be supplemented by irrigation. Water, fertilizer, gas, heat is the four basic elements of crop growth. Water is the first of the four. For crops to be stable and productive, they must first meet the crop’s demand for water. However, the meteorological statistics show that the rainfall in wheat growing season in Huaibei does not match with the demand of wheat in terms of the quantity and the spatial and temporal distribution. For example, in Suixi County, the average annual rainfall of wheat in the whole growth period is 296.8mm, which is 200mm lower than the upper limit of the whole wheat growth period (500mm, including sowing water 80mm) measured by Anhui Bureau of Water Science, 130mm lower than the lower limit (430mm) . According to Suixi weather