不同灌溉制度对设施葡萄水分利用效率及产量的影响

以设施延迟栽培条件下具有3年树龄的美国红提为研究对象,设置不同的滴灌灌溉制度进行试验,对其耗水特性、生长发育特性、水分利用效率和产量比较研究。结果表明:设施葡萄耗水量随灌水量增加显著增大,总灌水量相同情况下,生育期前期灌水定额越小耗水量越少;萌芽期不同灌水定额对葡萄新梢生长影响不显著,抽蔓期水分亏缺对叶面积指数影响明显;灌溉水利用效率随着灌溉量的增加而减小;产量在一定范围内不随灌水量的增多而显著增加;着色成熟期进行一定程度水分调控,提高灌溉水利用效率的同时不显著影响设施葡萄产量。

Effect of different irrigation scheme on yield and water use efficiency of facility grape

Taking American red of three years old under the condition of facility delay cultivation as study object, the paper set up different irrigation schedules and studied the water consumption characteristics, growth characteristics, water use efficiency and yield.The result showed that grape water consumption of facility increased significantly with the increase of irrigation volume.In the case of the same total irrigation volume, the smaller the irrigation quota,the less the water consumption in the early growth period;in germination stage,the different irrigation quotas have little impact on grape shoot growth and water deficiency significantly affect the leaf area index in pumping vine period;the irrigation water use efficiency of facilities grape decreases with the increase of irrigation amount;grape yield is not significantly increased with the increase of irrigation volume within a certain range;the moisture control can improve irrigation water use efficiency and not significantly affect grape yield in coloring maturity period.