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首页> 外文期刊>Annals of Agricultural Research >DIFFERENCES IN NITROGEN AND SULPHUR UPTAKE IN CANOLA AND NON CANOLA CULTIVARS OF OILSEED RAPE (BRASSICA NAPUS L.) AS INFLUENCED BY APPLICATION TIME OF NITROGEN AND SULPHUR
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DIFFERENCES IN NITROGEN AND SULPHUR UPTAKE IN CANOLA AND NON CANOLA CULTIVARS OF OILSEED RAPE (BRASSICA NAPUS L.) AS INFLUENCED BY APPLICATION TIME OF NITROGEN AND SULPHUR

机译：氮，硫施用时间对油菜油菜和非油菜品种氮，硫吸收的影响

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摘要

The effect of time of application of nitrogen (N) and sulphur (S) on nutrient uptake by three cultivars of oilseed rape (Brassica napus L.) was studied at Punjab Agricultural University Ludhiana during rabi 2006-07. Non canola cultivar GSL 1 recordedsignificantly higher nitrite reductase activity and higher nitrate reductase activity than both canola cultivars whereas opposite trend was discerned for nitrate reductase activity at 80 DAS. The differences among cultivars for N and S content at any growth stage were non significant. However, N and S uptake by seed was highest in OCN 3 and lowest in GSL 1. Combined application of N and S resulted in significantly higher nitrite reductase activity at 50 and 80 DAS and nitrate reductase activity at 50 DAS compared to their application alone or without application of N and S. The highest N uptake at all growth stages (except 50 DAS), seed and stover at harvest was registered with split application of N and S (N_(50+50)S_()20+20). Both N and S applied intwo equal splits (N_(50+50)S_(20+20)registered higher S content and significantly higher S uptake at all growth stages, seed and stover than application of same quantity of N in two equal splits and S only at sowing or their application in three splits.
机译：在旁遮普邦农业大学卢迪亚纳（Ludhiana）的狂犬病2006-07年度研究了氮（N）和硫（S）施用时间对三个油菜油菜（Brassica napus L.）养分吸收的影响。非双低油菜品种GSL 1的记录显示，与两个双低油菜品种相比，亚硝酸盐还原酶活性和硝酸盐还原酶活性明显更高，而在80 DAS时，硝酸盐还原酶活性却呈现出相反的趋势。在任何生长阶段，品种间氮和硫含量的差异均不显着。然而，与单独施用或单独施用相比，种子的N和S吸收在OCN 3中最高，而在GSL 1中最低。在50和80 DAS下联合施用N和S导致亚硝酸还原酶活性和50 DAS下硝酸盐还原酶活性明显更高。在所有生长阶段（除50 DAS之外），收获时的种子和秸秆的最高N吸收量均以N和（S_（50 + 50）S _（）20 + 20）分开施用记录。 N和S均以两个相等的分割（N_（50 + 50）S_（20 + 20）施用），与在两个相等的分割和相同的施用量中施用相同数量的N相比，在所有生育阶段，种子和秸秆上均具有更高的S含量和更高的S吸收率。仅在播种时使用S或将其分三批施用。

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