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首页> 外文期刊>Communications in Soil Science and Plant Analysis >Modeling effects of soil fertility of nutrients and precipitation of 22 years on sustainable productivity and profitability of pearl millet and sorghum rotation in semi-arid Vertisols.
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Modeling effects of soil fertility of nutrients and precipitation of 22 years on sustainable productivity and profitability of pearl millet and sorghum rotation in semi-arid Vertisols.

机译：土壤养分和22年降水的肥力对半干旱Vertisols中可持续发展的珍珠小米生产率和获利能力以及高粱轮作的影响。

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摘要

Based on experiments conducted during 1988-2009 on rainfed pearl millet/sorghum with 9 treatments in Vertisols, an efficient treatment for sustainable productivity is identified. Twenty kg of nitrogen (N) from farmyard manure (FYM)+20 kg N (urea)+10 kg phosphorus (P) ha-1 in pearl millet and 40 kg N (urea)+20 kg P+25 kg zinc sulfate (ZnSO4) ha-1 in sorghum gave maximum yield and rainwater-use efficiency, whereas 20 kg N (FYM)+20 kg (urea)+10 kg P ha-1 in pearl millet and 40 kg (urea)+20 kg P ha-1 in sorghum and gave maximum soil N, P, and potassium (K) over years. The regression model of 20 kg N (crop residue)+20 kg N (urea)+10 kg P ha-1 gave maximum R2 for predicting sorghum equivalent yield separately through precipitation and soil variables, whereas 20 kg N (FYM)+20 kg N (urea)+10 kg P ha-1 gave maximum R2 under combined model of both variables. Treatment of 20 kg N (FYM)+20 kg N (urea)+10 kg P ha-1 was superior for attaining maximum sorghum equivalent yield of 1062 kg ha-1, net returns of Rs. 4805 ha-1, benefit/cost (BC) ratio of 1.50, and 127 kg ha-1 of soil N, 10.3 kg ha-1 of soil P, and 386 kg ha-1 of soil K over years.
机译：根据在1988-2009年期间对雨养的珍珠粟/高粱进行9种Vertisols处理的实验，确定了可持续生产力的有效处理方法。珍珠粟中来自农家肥（FYM）的20千克氮（N）+20千克氮（尿素）+10千克磷（P）ha -1 和40千克氮（尿素）+20千克高粱中P + 25 kg硫酸锌（ZnSO 4 ）ha -1 具有最大的产量和雨水利用效率，而20 kg N（FYM）+20 kg（尿素） ）+ 10 kg P ha -1 在珍珠小米中和40 kg（尿素）+20 kg P ha -1 在高粱中产生最大的土壤N，P和钾（K）年。 20 kg N（作物​​残渣）+20 kg N（尿素）+10 kg P ha -1 的回归模型给出了最大R 2 ，用于分别预测高粱当量产量降水和土壤变量，而在两个变量的组合模型下，20 kg N（FYM）+20 kg N（尿素）+10 kg P ha -1 给出了最大R 2 。处理20 kg N（FYM）+20 kg N（尿素）+10 kg P ha -1 优于获得最大1062 kg ha -1 的高粱当量，净收益为卢比。 4805 ha -1 ，收益/成本（BC）比为1.50，土壤N 127 kg ha -1 ，10.3 kg ha -1 。

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