Effect of integration of fly ash with fertilizers and organic manures on nutrient availability, yield and nutrient uptake of rice in Alfisols.
Effect of integration of fly ash with fertilizers and organic manures on nutrient availability, yield and nutrient uptake of rice in Alfisols.
复制标题
粉煤灰与化肥和有机肥混施对 Alfisols 中水稻养分有效性、产量和养分吸收的影响。
DOI：
--
复制
发表时间：
2000
影响因子：
--
通讯作者：
K. Mathan
中科院分区：
文献类型：
--
作者：
G. Selvakumari;M. Baskar;D. Jayanthi;K. Mathan
从1997年夏季到1998年开斋节，在印度泰米尔纳德邦农业大学农场的Coimbatore进行了四个季节的田间试验，以研究长期单独施用粉煤灰以及与肥料、堆肥和Azosplrillum结合施用粉煤灰对水稻产量和吸收以及土壤理化性质和养分有效性的影响。四个季节的汇总平均值分析结果表明，与没有添加任何粉煤灰的处理相比，接受粉煤灰20和40 t ha−1的处理分别增产10.3%和16.6%。接受N、P和K作为肥料或肥料加堆肥或肥料加固氮菌的处理比不加任何肥料的处理增产117%、125%和131%。当粉煤灰与肥料、堆肥和固氮菌结合施用时，产量最高（69.0 q ha− 1）。吸收的显着增加表明，粉煤灰可以作为植物养分的来源。在粉煤灰复合植物养分供应系统中，其效果非常明显。连续施用褐煤粉煤灰导致第四季水稻收获后土壤pH、EC、交换性Na、有效P、K、Ca、Mg、S和Si显著增加。pH值的增加并不显著。研究结果还证实，即使连续三个季节添加粉煤灰，也没有影响土壤健康和作物生产的重金属含量。
Field experiments were conducted for four seasons from summer 1997 to kharif 1998 at Tamil Nadu Agricultural University farm, Coimbatore on Alfisols to study the effect of longterm application of flyash alone and in combination with fertilizer, compost and Azosplrillum on yield and uptake of rice and physicochemical properties and nutrient availability of the soil. The results of the pooled mean analysis for four seasons indicated that the treatments which received flyash @ 20 and 40 t ha−1 recorded a yield increase of 10.3 and 16.6 per cent, respectively over the treatments without any flyash addition. The treatments receiving N, P and K as fertilizers or fertilizers plus compost or fertilizers plus Azospirillum recorded 117, 125 and 131 per cent increase in yield over the treatments without any manurial addition. The highest yield (69.0 q ha−1) was recorded when flyash applied was @ 40 t ha−1 in combination with fertilizer, compost and Azospirillum. The significant increase in the uptake indicated that flyash could serve as a source of plant nutrients. Under integrated plant nutrient supply system with flyash, its effect was well pronounced. The continuous addition of lignite flyash resulted in significant increase in pH, EC, exchangeable Na, available P, K, Ca, Mg, S and Si in the post-harvest soil after fourth crop of rice. The increase in pH was not significant. The results also confirmed that even after continuous addition of flyash for three seasons, there was no hazardous level of heavy metal content that would affect soil health and crop production.