【作者】 杜健； 吴普特； 冯浩； 杜璇； 李茂辉； 夏志明； 王姮； 王珍； 郑芳； 李玉梅；

【Author】 Du Jian WuPute Fenghao Duxuan LiMaohui Wang Heng Xia Zhiming WangZhen Zheng Fang LiYumei Mengxing (1.Northwest A&F University,Yangling,Shaanxi,712100;2.National Water Saving Irrigation EngineeringCenter,Yangling,Shaanxi712100;3.Agricultural Technology Center,Sanyuan County,Shaanxi713800)

【机构】 西北农林科技大学； 国家节水灌溉杨凌工程技术研究中心； 三原县农业科技中心；

【摘要】 按照生态农业工程理论和抗旱节水工程技术要求,对棉花转基因抗旱品种、不同密度、不同基肥N、P的施用量进行田间水分胁迫综合试验。经在关中灌区3年试验研究结果表明:密度以每hm2种植7.5万株比4.5万株、6万株分别增产671.85kg、483.30kg,增产57.49%和41.36%。品种陕402(早熟)、陕576(中早熟)分别比中棉所41(中熟)增产16.62%和16.17%。施磷酸二铵比尿素增产,每公顷施150、225kg分别增产11.35%和10.53%。说明农业工程育种和农艺节水工程技术结合,不仅可降低生产成本44～47%,还可提高产量和品质,增收1050～5000元/hm2,同时保护了农业生态环境。更多还原

【Abstract】 In accordance with the theory of agricultural ecology and the requirements of water-saving technology, drought-resistant cotton varieties were comprehensively examined at different plant densities and different basal nitrogen and phosphorous rates. The results of the three-year experiment indicated that compared with the yields at 45000plants per hectare and 60000 plants per hectare, the cotton yield at 75000 plants per hectare increased by 671.85kg and 483.30 kg, or by 57.48% and 41.36%, respectively. Compared with the yield of Zhongmian 41(middle maturity), the yields of Shan 402(early maturity), and Shan576 (middle early-maturity) increased by 16.62 % and 16.1%, respectively. Compared with urea, diammonium phosphate increased cotton yield by 126kg and the two fertilizers at the rate ranging within 150—225kg per hectare increased cotton yield separately by 11.35% and 10.53%.更多还原