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控释肥对夏玉米产量和氮素积累与分配的影响
控释肥对夏玉米产量和氮素积累与分配的影响
作物学报 ACTA AGRONOMICA SINICA 2010, 36(10): 1760?1768
ISSN 0496-3490; CODEN TSHPA9
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E-mail: ******@.cn
DOI: .
控释肥对夏玉米产量和氮素积累与分配的影响
赵斌董树亭* 张吉旺刘鹏
山东农业大学农学院/ 作物生物学国家重点实验室, 山东泰安271018
摘要: 在大田条件下研究树脂包膜控释肥(CRF)和硫包膜控释肥(SCF)对夏玉米花后光合产物和氮素积累与分配及产量的影响。结果表明, 花后控释肥处理的光合速率始终较高, 在相同施肥量(N、P、K量相同)情况下, 控释肥CRF (1 428 kg hm?2)和SCF (1 668 kg hm?2)及其减量25%F, 1 260 kg hm?2)处理; 控释肥减量25%时, F处理; 成熟期籽粒的氮素积累, F处理, 并随着控释肥比例的增加而增加, 全量与减量25%的处理无显著差异。控释肥能显著提高玉米产量, %%; 控释肥减量
25%时, %%; 其氮肥利用率和农学效率也均显著高于普通肥处理。
关键词: 夏玉米; 控释肥; 干物质积累与分配; 氮素积累与分配; 产量
Effects of Controlled-Release Fertilizer on Yield and Nitrogen Accumulation and Distribution in Summer Maize
ZHAO Bin, DONG Shu-Ting?, ZHANG Ji-Wang, and LIU Peng
/ Key Laboratory of Crop Biology / College of Agronomy, Shandong Agricultural University, Tai’an 271018, China
Abstract: The field experiment was conducted to investigate the effects of controlled-release fertilizers (including one kind of fertilizer enveloped by colophony, CRF, and the other kind of fertilizer enveloped by sulfur, SCF) on accumulation and distribu-tion of photosynthate and nitrogen as well as yield after anthesis of summer maize. Results indicated that photosynthetic rate of the treatments with controlled-release fertilizers CRF and SCF kept in a higher level after anthesis. Under the same application rates of N, P, and K, applying CRF (1 428 kg ha?1) and SCF (1 668 kg ha?1) increased the accumulation of dry matter and nitrogen per plant pared with applying pound fertilizer (CCF, 1 260 kg ha?1). When the applied amounts of the CRF and SCF were decreased by 25%, the/ increment was also significant, and the distribution proportion of the dry matter from plant to seeds was significantly higher than that of F. The accumulation of the nitrogen