不同供水条件对加工型马铃薯大西洋产量和水分生产效应的影响

Effects of Different Water Supply Conditions on Yield and Water Production Effect of Processed Potato Cultivar Atlantic

在甘肃中部沿黄灌区研究了不同供水条件对加工型马铃薯品种大西洋的产量和水分生产效应的影响,结果表明,现蕾至终花期增加灌水量和灌水次数,加工型马铃薯大西洋增产显著;在花期充分供水的基础上,终花至成熟期适度增加灌水,有利于提高马铃薯大西洋产量和水分利用效率。在水肥一体化条件下,加工型马铃薯大西洋最适宜的水分管理模式为:现蕾至终花期灌水定额2 400 m^3/hm^2,灌水16次;终花至成熟期灌水定额900 m^3/hm^2,灌水6次,每次灌水量均为150 m^3/hm^2。在该水分管理模式下,马铃薯单株结薯数和块茎重也明显增加,较其余处理增产2.02%~16.91%,薯块商品性相对优化。

In yellow river irrigation areas of middle Gansu Province,effects of different water supply conditions on yield and water production effect of processed potato cultivar Atlantic were studied. The results showed that yield of processed potato was significantly increased by increasing irrigation quantity and times from squaring period to flowering period;On the basis of adequate water supply in flowering stage,increased irrigation quantity moderately from final flowering period to mature period,it is beneficial to improve potato yield and water use efficiency. Under the condition of water and fertilizer integration,the suitable water management mode of processed potato cultivar Atlantic is that irrigated water volume was 2 400 m^3/hm^2 and irrigated 16 times from squaring period to flowering period,irrigated water volume was 900 m^3/hm^2 and irrigated 6 times from final flowering period to mature period. Under this water management mode,the number of tubers per plant and the weight of tubers increased significantly,which increased by 2.02%~16.91% compared with other treatments,and the commercial property of potato tubers was relatively optimized.