不同滴灌量和施氮量对马铃薯产量和品质的影响

Effect on different quantities of drip irrigation and nitrogen fertilization for yield and quality of potato

本试验采用裂区设计方案,对"大西洋"马铃薯的水、氮二因素进行了研究,试验结果表明:马铃薯的产量、单株薯重、商品薯率和淀粉含量都随施氮量的增加而呈抛物线趋势变化;其中小水量多次灌水的灌水方式下氮水平为180kg/hm2的处理,其产量、商品薯率和淀粉含量都表现最好,分别为:46216 4kg/hm2、87 56%和17 71%;在小水量多次灌水的灌溉方式下,马铃薯在低氮水平就能达到高产优质,是一种较为理想的滴灌方式。

The experimental research about nitrogen and water indicates that the varieties of the tuber yield,commodity potato rate and starch contain all report some parabola trends as the quantity of nitrogen increases. The figures of the highest tuber yield and commodity potato rate and starch contain are 46216.4 kg/hm^2,87.56% and 17.71%. Potato character under can show superior in low nitrogen level such as tuber yield, commodity potato rate and starch contain etc. So the method of small quantity and many times which benefits to the absorption of the nitrogen fertilizer is better.