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首页> 外文期刊>International Journal of Agricultural Sciences and Natural Resources >Performance of Sugarcane Genotypes Under Different Nitrogen Levels in Sub-Tropical Region of Nepal
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Performance of Sugarcane Genotypes Under Different Nitrogen Levels in Sub-Tropical Region of Nepal

机译：尼泊尔亚热带地区不同氮水平下甘蔗基因型的表现

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摘要

A field experiment was conducted during consecutive years of 2014-16 to study the effect of different nutrient levels on performance of sugarcane genotypes on sandy loam soils at National Sugarcane Research Program, Jitpur, Bara, Nepal. The experiment was laid out in split plot design of four nitrogen levels 75%, 100%, 125%, 150% of recommended dose (RD) i.e 112.5, 150, 187.5, 225 kg N/ha for plant crop and 150, 200, 250, 300 kg N/ha for ratoon respectively and four varieties viz. CoLk 94184, BO 147, Co 0233 and BO 141 replicated thrice. The experimental results revealed that significantly increased in number of millable cane and cane yield with increasing nitrogen levels. Application of 150% nitrogen RD (225 and 300 kg N/ha) significantly counted higher number millable canes (115548.43/ha and 100700/ha) in both plant and ratoon crop respectively. High nitrogen levels i.e. 187.5 and 225 kg N/ha showed significant higher cane yield over 150 kg N/ha by 7.22 and 9.36% in plant crop respectively. Reducing nitrogen levels by 25% of RD resulted significantly low yield of 59.78 mt/ha, shortest stalk length (1.87 m) and low single cane weight of 0.65 kg in ratoon crop but not significantly difference in stalk length, cane diameter and single cane weight in plant crop. The data indicated that significantly higher number of millable cane was counted in genotypes CoLk 94184 of 124831.06/ha and 107400/ha in both plant and ratoon crop respectively followed by BO 141 and Co 0233. Higher cane yield was produced by genotypes BO 141 (94.01 and 75.89 mt/ha) and Co 0233 (93.18 and 81.72 mt/ha) in plant crop as well as in ratoon crop respectively. The ratoon performance index (RPI) of genotypes Co 0233 (89.21), CoLk 94181 (84.01) and BO 141 (81.59) were identified as better as compared to BO 147.
机译：在尼泊尔贾拉普尔国家甘蔗研究计划中，2014-16年连续几年进行了田间试验，以研究不同养分水平对沙质壤土上甘蔗基因型表现的影响。该实验以分块设计的方式进行，其中四个氮水平分别为推荐剂量（RD）的75％，100％，125％和150％，即作物作物的112.5、150、187.5、225 kg N / ha，150、200，再生棉分别为250、300 kg N / ha和四个品种。 CoLk 94184，BO 147，Co 0233和BO 141复制了三次。实验结果表明，随着氮含量的增加，可碾磨甘蔗的数量和甘蔗产量显着增加。施用150％氮RD（225和300 kg N / ha）显着地计数了植物和再生作物中可种植的更高数量的甘蔗（115548.43 / ha和100700 / ha）。高氮水平，即187.5和225 kg N / ha，显示出高于150 kg N / ha的甘蔗产量分别高出植物作物的7.22和9.36％。将氮含量降低RD的25％，导致再生稻产量显着降低，低至59.78 mt / ha，最短茎长（1.87 m），单茎重低至0.65 kg，但茎长，茎径和单茎重无显着差异在植物中。数据表明，在植物和再生作物中，CoLk 94184基因型分别以124831.06 / ha和107400 / ha的基因型计数较高的甘蔗产量，其次为BO 141和Co0233。基因型BO 141（94.01和作物作物以及再生作物分别为75.89公吨/公顷和0233 Co（93.18和81.72公吨/公顷）。 Co 0233（89.21），CoLk 94181（84.01）和BO 141（81.59）基因型的再生性能指数（RPI）与BO 147相比更好。

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