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首页> 外文期刊>Crop Research >Effect of date of transplanting, plant population and nitrogen levels on nitrogen uptake and nutrient status of soil in basmati rice.
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Effect of date of transplanting, plant population and nitrogen levels on nitrogen uptake and nutrient status of soil in basmati rice.

机译：移栽日期，植物种群和氮水平对印度香米中氮素吸收和土壤养分状况的影响。

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摘要

A field experiment was conducted during kharif 2003 to evaluate the effect of date of transplanting, plant population and nitrogen level on fertility status and nitrogen uptake in basmati rice. Nitrogen uptake in different plant parts was not significantly influenced by date of transplanting. The plant population showed a significant and progressive increase in nitrogen uptake with increase in plant population only at the maximum tillering stage, where plant population of 44 hills/m2 showed maximum N uptake (27.1 kg/ha) followed by 33 hills/m2 (22.0 kg/ha) and 25 hills/m2 (18.1 kg/ha). Similarly, a progressive increase in nitrogen uptake was observed with each incremental level of nitrogen at all the growth stages. Total nitrogen uptake of 24.7, 39.8, 60.8 and 85.1 kg/ha was observed at harvest of basmati rice with the application of 0, 20, 40 and 60 kg N/ha, respectively. Date of transplanting and plant population did not influence the organic carbon, available nitrogen, phosphorus and potassium content of the soil. Application of nitrogen upto 60 kg/ha to basmati rice significantly increased the OC and P content of the soil, but N and K content increased significantly only upto 40 kg/ha. After harvesting of basmati rice, the organic carbon, nitrogen, phosphorus and potassium content of the soil were decreased as compared to their initial values.
机译：在2003年卡里夫（kharif）期间进行了田间试验，以评估移栽日期，植物种群和氮水平对印度香米的生育状况和氮吸收的影响。移植日期对植物不同部位的氮吸收没有显着影响。仅在最大分ing期，植物种群的氮素吸收量才显着增加，并随植物种群的增加而增加，其中44丘/ m 2 的植物种群显示最大的氮素吸收（27.1 kg / ha）其次是33山/ m 2 （22.0千克/公顷）和25山/ m 2 （18.1千克/公顷）。同样，在所有生长期，随着氮水平的增加，氮的吸收逐渐增加。在印度香米收获时，分别以0、20、40和60 kg N / ha的施用量观察到总氮吸收量为24.7、39.8、60.8和85.1 kg / ha。移栽日期和种群数量不影响土壤中的有机碳，有效氮，磷和钾含量。在印度大米中施用高达60 kg / ha的氮能显着增加土壤中的OC和P含量，而氮和钾的含量仅在40 kg / ha时才显着增加。收获印度香米后，土壤的有机碳，氮，磷和钾含量均比其初始值降低。

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