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首页> 外文期刊>Crop Research >Effect of N and P levels on growth parameters, yield parameters, yield, nutrient uptake and economics of rice (Oryza sativa).
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Effect of N and P levels on growth parameters, yield parameters, yield, nutrient uptake and economics of rice (Oryza sativa).

机译：氮和磷水平对水稻（Oryza sativa）生长参数，产量参数，产量，养分吸收和经济性的影响。

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摘要

An experiment was conducted during kharif 2011 at Agricultural College Farm, Mahanandi, to study the growth parameters, yield parameters, yield and nutrient uptake of rice in grain and straw. The results indicated that highest values of growth parameters viz., plant height, leaf area index, dry matter production and number of total tillers were recorded with application of highest level of nitrogen viz., 240 kg N/ha but it was on par with application of 200 kg N/ha and significantly superior to 160 kg N/ha. Higher number of effective tillers/m2, grain and straw yield were recorded with application of 240 kg N/ha and it was on par with application of 200 kg N/ha and significantly superior to 160 kg N/ha. Highest nitrogen uptake in grain and straw was noticed with application of 240 kg N/ha and lowest was with application of 160 kg N/ha. Also the highest gross returns were with application of 240 kg N/ha and lowest was with application of 160 kg N/ha. Among phosphorus levels, highest values of growth parameters viz., plant height, leaf area index and total tillers/m2 were with application of 80 kg P2O5/ha and lowest were with control. Highest number of effective tillers/m2, grain and straw yield were recorded with application of 80 kg P2O5/ha and it was on par with application of 60 kg P2O5/ha. Highest phosphorus uptake in grain and straw was noticed with application of 80 kg P2O5/ha and lowest was with application of control. Highest gross returns were with application of 80 kg P2O5/ha and lowest were with application of control. Application of 200 kg N/ha and 60 kg P2O5/ha was found most suitable for low land rice.
机译：在2011年kharif期间，在马哈南迪农业大学农场进行了一项实验，以研究稻米在谷物和稻草中的生长参数，产量参数，产量和养分吸收。结果表明，施用最高水平的氮素，即240 kg N / ha，记录了生长参数的最高值，即株高，叶面积指数，干物质产量和总分till数，但与施肥量为200 kg N / ha，明显优于160 kg N / ha。施肥240 kg N / ha记录的有效耕作数量/ m 2 ，谷物和秸秆产量更高，与施肥200 kg N / ha相当，远高于160 kg N /哈。施氮量为240 kg N / ha时，谷物和秸秆中氮的吸收最高，施氮量为160 kg N / ha时最低。另外，总的最高收益是施用240 kg N / ha，而最低的是施用160 kg N / ha。在磷水平中，施用80 kg P 2 O 时，生长参数最高值，株高，叶面积指数和总分till / m 2 5 / ha，最低为对照。施用80 kg P 2 O 5 / ha的有效分till / m 2 ，谷物和秸秆产量最高。与施用60 kg P 2 O 5 / ha相当。施用80 kg P 2 O 5 / ha时，谷物和秸秆中的磷吸收最高，而施用对照时最低。施用80 kg P 2 O 5 / ha的最高总收益，而施用对照最低。发现200 kg N / ha和60 kg P 2 O 5 / ha的施肥最适合低陆稻。

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