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首页> 外文会议>Sugar Technologists' Association of India Annual Convention; 20070822-24; Goa(IN) >NITROGEN REQUIREMENT OF AUTUMN SUGARCANE BASED INTERCROPPING SYSTEMS
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NITROGEN REQUIREMENT OF AUTUMN SUGARCANE BASED INTERCROPPING SYSTEMS

机译：秋季甘蔗间作系统的氮素需求

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A field study was conducted for three cropping seasons at research farms of Punjab Agricultural University at Ludhiana (2002-03 and 2003-04) and Faridkot (2003-04) to determine the optimum nitrogen requirement of sugarcane/raya and sugarcane/cabbage intercropping systems. Ten treatment combinations consisting of two intercropping system i.e. sugarcane with raya (Brassicajuncea) (1:2) and cabbage (Brassica oleracea var capitata) (1:1) in main plots, both supplied with five nitrogen levels - 0, 25, 50, 75 and 100% of recommended to intercrops in sub plots, were replicated thrice in a split plot design. In addition to graded nitrogen levels applied to intercrops, sugarcane crop in all the treatments was supplied with uniform recommended N dose of 225 kg N/ha. In sugarcane/ raya system 0, 25, 50, 75 and 100% nitrogen received 225, 237.5, 250, 262.5 and 275 kg N/ha, respectively, while in sugarcane/cabbage 225, 240.6, 256.2, 271.8 and 287.5 kg N/ha. Averaged over three locations and nitrogen levels, sugarcane /cabbage intercropping recorded higher cane yield (79.0 t/ha) as compared to sugarcane/raya (70.5 t/ha), however, the net returns and B:C ratio were higher in sugarcane/raya intercropping (Rs 52,630/ha, 0.96) as compared to Rs. 46,130 /ha and 0.69 in sugarcane /cabbage. Averaged over intercropping systems, cane yield, intercrop yield and net returns remained statistically uninfluenced by nitrogen at all the locations, indicating that N dose recommended for sole crop of autumn sugarcane (225 kg N/ha) was sufficient to meet the nitrogen requirement of sugarcane / raya or cabbage intercropping systems. Cane quality remained uninfluenced by intercropping systems and nitrogen.
机译：在卢迪亚纳的旁遮普农业大学（2002-03和2003-04）和Faridkot（2003-04）的研究农场对三个作物季节进行了田间研究，以确定甘蔗/柳树和甘蔗/卷心菜间作系统的最佳氮需求。十个处理组合由两个套作系统组成，即在主要地块中，甘蔗与raya（Brassicajuncea）（1：2）和甘蓝（Brassica oleracea var capitata）（1：1），均提供五个氮水平-0、25、50，在子样地中，建议将75％和100％的间作建议在间作中重复三次。除了在间作作物上施用分级氮水平外，在所有处理中，甘蔗作物的推荐氮素剂量统一为225 kg N / ha。在甘蔗/大麦系统中，分别以225、237.5、250、262.5和275 kg N / ha施用0、25、50、75和100％的氮，而在甘蔗/甘蓝中225、240.6、256.2、271.8和287.5 kg /哈。甘蔗/白菜间作在三个位置和氮水平上的平均值为蔗糖产量（79.0吨/公顷），高于甘蔗/柳树（70.5吨/公顷），但是，甘蔗/白菜的净收益和B：C比更高拉雅间作（Rs 52,630 / ha，0.96）与Rs相比。 46,130 /公顷，甘蔗/白菜0.69。在整个套作系统中平均，甘蔗产量，间作产量和净收益在所有位置上均不受氮的统计影响，这表明推荐用于秋季甘蔗唯一作物的氮剂量（225 kg N / ha）足以满足甘蔗的氮需求/ raya或白菜间作系统。间作系统和氮对甘蔗品质没有影响。

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