摘要
选用河西地区广泛应用的甜瓜品种,采用裂区设计,研究河西灌区甜瓜生长期不同水氮投入量对甜瓜产量和品质的影响。在试验条件下,增加灌水和施氮均能促使产量和品质提高,且氮素作用大于灌水效应;在一定范围内,甜瓜产量随着灌水量和施氮量的增加而提高;在灌水量达到2 700m3/hm2、施氮量达到240kg/hm2时,甜瓜产量最高,为53 849kg/hm2,水分利用率达到19.94%,氮肥利用率达到22.22%。继续增加灌水、施肥量,产量和品质有下降趋势;综合产量、品质和水氮利用率,灌水量为2 700m3/hm2,施氮量240kg/hm2为较适宜水平。
The field experiment was conducted to study the effects of irrigation and nitrogen application rates on melon yields and quality in Hexi in Gansu Province.The experiment was split-block design had two factors and four levels design with 3 replications.The plots were random array in field.The results indicated that both irrigation and fertilizer have pronounced effects on the seed output and quality in the test conditions,and the effect of N fertilizer application are more significantly than that of irrigation water,for the yield,with the increased amount of nitrogen,melon production added,but to a certain volume,a low trend started.The experience indicated that the optimum combinations of rate of irrigation water and N were 2 700 m^3/hm^2 and 240 kg/hm2,and top yield was 53 849 kg/hm2,the WUE was 19.94%,the NUE was 22.22%.
出处
《灌溉排水学报》
CSCD
北大核心
2012年第3期132-134,共3页
Journal of Irrigation and Drainage
基金
现代农业产业技术体系建设专项资金(CARS-26-20)
关键词
灌区
甜瓜
水氮交互
品质
irrigation area
melon
water ＆ nitrogen spatial coupling
quality
