The widespread deficiencies of micronutrients have been reported in soils of India in the recent past due to intensive cultivation practices and the use of chemical fertilizers which are free of micronutrients. The adoption of integrated nutrient management technique may ameliorate micronutrients deficiencies by adding micronutrients and through their mobilization from unavailable to available forms and also increase their uptake by crops. To study the effect of integrated nutrient management on transformations of micronutrients fraction, a 2 years’ field experiment was conducted at the research farm of the Department of Soil Science, PAU, Ludhiana. Under this experiment, farmyard manure, poultry manure, press mud, and rice straw compost were added in combination with different levels of fertilizers. Soil samples were analyzed for micronutrient fractions, and the yield of the wheat crop was estimated for determining uptake. The results revealed that integrated nutrient management significantly affected transformations of micronutrients. All the micronutrients reported a higher residual fraction than other fractions under all the treatments whereas WS + EX (water-soluble plus exchangeable) fraction had the lowest content. In addition, the integrated use of manures and fertilizers helped in the redistribution of micronutrients fractions from unavailable forms to plant-available pools. The biological uptake of micronutrients by wheat had a strong and positive correlation with SpAD (specifically adsorbed) fraction (r = 0.72, 0.62, 0.71, and 0.77 for Zn, Cu, Fe, and Mn, respectively) indicating the major contribution of SpAD towards WS + EX fraction which is easily absorbed by plants. The addition of different manures enhanced fractions of Zn, Cu, Fe, and Mn in soil and contributed significantly to the uptake of micronutrients by wheat crop.

最近，由于集约化耕作方式和使用不含微量营养素的化肥，印度土壤普遍缺乏微量营养素。采用综合养分管理技术可以通过添加微量营养素并通过将它们从不可利用的形式调动到可用的形式来改善微量营养素的缺乏，并增加作物对它们的吸收。为了研究综合养分管理对微量营养素部分转化的影响，在卢迪亚纳 PAU 土壤科学系的研究农场进行了为期 2 年的田间试验。本次试验中，农家肥、家禽粪便、压泥、稻草堆肥配合不同水平的肥料加入。分析土壤样品的微量营养素部分，并估计小麦作物的产量以确定吸收量。结果表明，综合营养管理显着影响微量营养素的转化。在所有处理下，所有微量营养素的残留分数均高于其他分数，而 WS + EX（水溶性加可交换）分数最低。此外，粪肥和肥料的综合使用有助于将微量营养素部分从不可利用的形式重新分配到植物可利用的池中。小麦对微量营养素的生物吸收与 SpAD（特异性吸附）分数呈强正相关（结果表明，综合营养管理显着影响微量营养素的转化。在所有处理下，所有微量营养素的残留分数都高于其他分数，而 WS + EX（水溶性加可交换）分数最低。此外，粪肥和肥料的综合使用有助于将微量营养素部分从不可利用的形式重新分配到植物可利用的池中。小麦对微量营养素的生物吸收与 SpAD（特异性吸附）分数呈强正相关（结果表明，综合营养管理显着影响微量营养素的转化。在所有处理下，所有微量营养素的残留分数都高于其他分数，而 WS + EX（水溶性加可交换）分数最低。此外，粪肥和肥料的综合使用有助于将微量营养素部分从不可利用的形式重新分配到植物可利用的池中。小麦对微量营养素的生物吸收与 SpAD（特异性吸附）分数呈强正相关（粪肥和肥料的综合使用有助于将微量营养素成分从不可利用的形式重新分配到植物可利用的池中。小麦对微量营养素的生物吸收与 SpAD（特异性吸附）分数呈强正相关（粪肥和肥料的综合使用有助于将微量营养素成分从不可利用的形式重新分配到植物可利用的池中。小麦对微量营养素的生物吸收与 SpAD（特异性吸附）分数呈强正相关（r  = 0.72、0.62、0.71 和 0.77（对于 Zn、Cu、Fe 和 Mn），表明 SpAD 对容易被植物吸收的 WS + EX 部分的主要贡献。不同肥料的添加提高了土壤中锌、铜、铁和锰的含量，并显着促进了小麦作物对微量营养素的吸收。