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首页> 外文会议>Second International Conference on Sustainable Agriculture for Food, Energy and Industry Vol.1 Sep 8-13, 2002 Beijing, China >Influence of Soil Organic Matter on the Productivity of Pearl Millet - Wheat Cropping Sequence
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Influence of Soil Organic Matter on the Productivity of Pearl Millet - Wheat Cropping Sequence

机译：土壤有机质对珍珠谷-小麦种植顺序生产力的影响。

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摘要

A long-term field experiment was initiated in November, 1967 at Research Area of Department of Soil Science to study the response of nitrogen to pearl millet ― wheat cropping system at various doses and modes of farmyard manure application. The soil organic matter increased with farmyard manure application and ranged from 0.68% in control to 1.82% in the plot receiving the highest annual dose (90 Mg ha~(-1)) of farmyard manure. To study the contribution of farmyard manure on the productivity of pearl millet and wheat crops, the constants (intercept and slope) were determined between the grain yield of pearl millet and wheat crops with increasing dose of fertilizer nitrogen. Another linear regression was fitted between the intercept of the linear model and the soil organic carbon content. It has been observed that with each unit increase in the soil organic carbon, the productivity of pearl millet increased by 273 kg ha~(-1) and that of wheat by 1591 kg ha~(-1). The regression between the slope and soil organic carbon was linear in case of pearl millet (R~2 0.49) but in case of wheat there was no relationship.
机译：1967年11月，在土壤科学系的研究区开始了一个长期的田间试验，以研究不同剂量和方式施用氮肥对小米-小麦种植系统中氮的响应。土壤有机质随施用农田肥料的增加而增加，范围从对照的0.68％到接受最高年度农田肥料剂量（90 Mg ha〜（-1））的样地的1.82％。为了研究农家肥料对珍珠粟和小麦作物生产力的贡献，确定了随着肥料氮含量的增加，珍珠粟和小麦作物的谷物产量之间的常数（截距和斜率）。在线性模型的截距与土壤有机碳含量之间进行了另一线性回归拟合。已经观察到，每增加一个单位土壤有机碳，珍珠粟的生产率增加273 kg ha〜（-1），小麦的生产力增加1591 kg ha〜（-1）。珍珠粟（R〜2 0.49）的情况下，坡度与土壤有机碳之间的线性关系是线性的，而小麦则没有关系。

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