A field experiment was conducted on a sandy loam soil at an Experimental Farm in Taejon, South Korea, to determine the effects of paper mill sludge compost application rates on K, Na, Ca and Mg concentrations of soybe...A field experiment was conducted on a sandy loam soil at an Experimental Farm in Taejon, South Korea, to determine the effects of paper mill sludge compost application rates on K, Na, Ca and Mg concentrations of soybean (Glycine max(L.) Merr.) aboveground tissues and the genotypic effects on the concentrations of these elements. Sludge compost treatments of 0, 75, and 150 t ha-1 were applied to 30 diverse soybean cultivars. Concentrations of K, Na, Ca, and Mg in aboveground tissues harvested 69 days after planting (DAP) varied with the genotype and the application rate of paper-mill sludge compost, with the sludge compost application rate exerting stronger influence on these concentrations than the genotype. The magnitude of variation caused by both genotype and sludge compost application was in the order of Mg ＞ K ＞ Ca ＞ Na. Significantly positive correlations were observed between K and Na (P ＜ 0.01), Na and Ca(P ＜ 0.05), and Ca and Mg (P ＜ 0.01). Also, the lower the sludge compost application rate, the larger the variation in the concentrations of K, Na, and Ca. From this several cultivars were identified for use as an accumulator for one or more of these elements.展开更多
探究不同施磷量对胡麻籽粒蛋白质和金属元素含量的影响,为构建磷肥高效管理提供依据。通过2018和2019年连续2年大田试验,设置5个施磷水平(0、40、80、120、160 kg P_(2)O_(5)·hm^(-2)),3个品种(陇亚杂1号、陇亚14号和张亚2号)两因...探究不同施磷量对胡麻籽粒蛋白质和金属元素含量的影响,为构建磷肥高效管理提供依据。通过2018和2019年连续2年大田试验,设置5个施磷水平(0、40、80、120、160 kg P_(2)O_(5)·hm^(-2)),3个品种(陇亚杂1号、陇亚14号和张亚2号)两因素随机区组试验,研究不同磷水平对胡麻籽粒产量,籽粒蛋白质、钾、钙、钠、镁含量的作用效果。结果表明,随施磷量增加,胡麻籽粒产量、籽粒钾、钙、镁含量不同程度增加;相比不施磷,施磷处理籽粒产量、籽粒钾、钙、镁含量,分别平均提高17.6%、11.6%、17.6%和12.5%;籽粒蛋白质和钠含量不受磷影响。综合考虑胡麻籽粒产量、籽粒钾、钙、镁含量和生态环境,该区域施磷80 kg P_(2)O_(5)·hm^(-2)较佳,可协同增加胡麻籽粒产量及籽粒钙、镁含量;降低环境风险,减少碳排放。展开更多
文摘A field experiment was conducted on a sandy loam soil at an Experimental Farm in Taejon, South Korea, to determine the effects of paper mill sludge compost application rates on K, Na, Ca and Mg concentrations of soybean (Glycine max(L.) Merr.) aboveground tissues and the genotypic effects on the concentrations of these elements. Sludge compost treatments of 0, 75, and 150 t ha-1 were applied to 30 diverse soybean cultivars. Concentrations of K, Na, Ca, and Mg in aboveground tissues harvested 69 days after planting (DAP) varied with the genotype and the application rate of paper-mill sludge compost, with the sludge compost application rate exerting stronger influence on these concentrations than the genotype. The magnitude of variation caused by both genotype and sludge compost application was in the order of Mg ＞ K ＞ Ca ＞ Na. Significantly positive correlations were observed between K and Na (P ＜ 0.01), Na and Ca(P ＜ 0.05), and Ca and Mg (P ＜ 0.01). Also, the lower the sludge compost application rate, the larger the variation in the concentrations of K, Na, and Ca. From this several cultivars were identified for use as an accumulator for one or more of these elements.
文摘探究不同施磷量对胡麻籽粒蛋白质和金属元素含量的影响,为构建磷肥高效管理提供依据。通过2018和2019年连续2年大田试验,设置5个施磷水平(0、40、80、120、160 kg P_(2)O_(5)·hm^(-2)),3个品种(陇亚杂1号、陇亚14号和张亚2号)两因素随机区组试验,研究不同磷水平对胡麻籽粒产量,籽粒蛋白质、钾、钙、钠、镁含量的作用效果。结果表明,随施磷量增加,胡麻籽粒产量、籽粒钾、钙、镁含量不同程度增加;相比不施磷,施磷处理籽粒产量、籽粒钾、钙、镁含量,分别平均提高17.6%、11.6%、17.6%和12.5%;籽粒蛋白质和钠含量不受磷影响。综合考虑胡麻籽粒产量、籽粒钾、钙、镁含量和生态环境,该区域施磷80 kg P_(2)O_(5)·hm^(-2)较佳,可协同增加胡麻籽粒产量及籽粒钙、镁含量;降低环境风险,减少碳排放。
