共查询到19条相似文献,搜索用时 78 毫秒
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为探讨青海省干旱区青稞发展的新途径,开展青稞高产栽培和经济效益的评价。结果表明:滴灌条件青稞的最佳灌水量为4 659m3/hm2,产量为7 950 kg/hm2。青稞整个生育期吸收氮最多,其次为钾,磷最少。最佳追肥比例为苗期9%,开花期28%,灌浆期43%。示范区较农户地产量提高了14.68%,净收益提高了40.40%,用水量降低了48.23%。可为青海省干旱区青稞的高产栽培、水分高效利用和农民增收提供依据。 相似文献
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<正> 冀东地区采用地膜覆盖栽培马铃薯,由于提前下种,使马铃薯结薯期处在适宜的温度条件下,不仅可以早上市,而且产量高、品质好,商品价值提高。一般6月中旬即可收获,亩产马铃薯块茎2400—3000公斤。亩收入800—1000元。马铃薯还能与粮食(玉米)、蔬菜等作物实行间套复种,农田的产出 相似文献
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陕北沙区马铃薯生产中水肥利用效率较低,滴灌水肥一体化技术对该地区马铃薯产量的影响少见报道。研究采用饱和D-416-A最优设计,在滴灌条件下设置16种水肥组合(T1~T16),分析不同水肥组合处理对马铃薯植株光合速率、水分利用效率及马铃薯产量的影响。结果表明,在整个生育期,T10处理(灌水量为5 268.249 m·hm-2,氮、磷、钾施用量分别为 290.119、290.119、167.449 kg·hm-2)和T5处理(灌水量为3 131.751 m·hm-2,氮、磷、钾用量分别为290.119、129.881、167.449 kg·hm-2)的叶片净光合速率高于其他处理2.95%~192.47%。在块茎形成期,T10处理的叶片水分利用效率最大,T5处理次之。T10处理的马铃薯产量略高于T5处理2.55%,且显著高于其他处理5.30%~99.84%(P<0.05)。T5处理的马铃薯商品薯率和水分生产率分别较其他处理高4.15%~111.55%和22.44%~152.91%。研究表明,与高水高肥组合相比,T5处理的水肥耦合模式明显节约灌溉用水和磷肥用量,有利于提高马铃薯的产量和商品薯率。 相似文献
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The current study was carried out at Agricultural College, University of Baghdad in the vegetable farm, Department of Horticulture during 2013 spring growing season. Yield response to irrigation of different crops is of major importance in production planning where water resources are limited. This study aims to determine the effect of different irrigation treatment (deficit irrigation) and potassium humate fertilizer on yield, content of nitrogen, potassium, and phosphor in tuber of potato and water use efficiency in the Abu-Graib Region, Iraq. Potato was grown under drip irrigation with three treatments: irrigation applied when evaporation 75%, 100% and 125% from pan A, and three potassium humate fertilizers: 0, 1.2 and 2.4 kg/ha with three times additions. The seasonal potato evapotranspiration ranged from 267 mm to 372 mm. The drip irrigation treatment had significant effecting tuber yield of potato recorder 29,530, 27,630 and 24,880 kg/ha for 125%, 100% and 75% from pan A evapotranspiration, respectively. Humus fertilizers addition has the lowest value of ETa 309 mm and maximum value of yield 2,930 kg/ha. Water use efficiency (WUE) and irrigation water use efficiency (IWUE) values increased with increasing humus fertilizers, recording 9.92, 14.52, 8.59, 12.42 and 7.51, 10.70 kg/m3 for potassium humate K3 (2.4 kg/ha), K2 (1.2 kg/ha) and KI (0.0 kg/ha), respectively. Plants irrigated with 125% from class pans A evaporation, produced a significant increase in N, P and K content in tubers recorder 0.96%, 0.58% and 1.52%, respectively. Potassium humus-fertilizer significant differences among K1, K2 and K3 on high of plants reached 41.52, 50.08 and 56.39 cm, respectively, number of stems/plant 2.69, 3.22 and 3.78, respectively, leaves area index recorder 2.80, 3.35 and 3.73. 相似文献
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海原县马铃薯高产栽培技术 总被引:1,自引:0,他引:1
对宁夏海原县马铃薯高产栽培关键技术进行了总结。马铃薯种植品种应以青薯168为主,搭配青薯9号等晚熟菜用外销品种,重点推广覆膜保墒旱作节水、种薯拌药、测土配方施肥、病虫害统防统治、适期收获等标准化栽培技术,实现目标产量30 000 kg/hm2。 相似文献
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马铃薯黑色地膜覆盖高产栽培技术及示范基地效益评价 总被引:1,自引:0,他引:1
黑色地膜覆盖平均单产达42660kg/hm^2,产值达40950元/hm^2;比白色地膜覆盖增产6375kg/hm^2,增产17.6%。比露地增产15480kg/hm^2,增产57.0‰黑色地膜比白色地膜覆盖产值增加6120元/hm^2,比露地产值增加14860.5元/hm^2,较露地净增产值3235.5元/hm^2。黑色地膜增产的主要原因是土壤含水量比露地高0.078-3.080个百分点,在马铃薯淀粉积累的关键时期,土壤含水量比露地高3.080个百分点。 相似文献
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