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首页> 外文期刊>Journal of Energy and Natural Resources >Assessment of Potassium Element on Lentil (Lens culinaris Medic) Agronomy and Nutrient Use Efficiency in Calcareous Soils
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Assessment of Potassium Element on Lentil (Lens culinaris Medic) Agronomy and Nutrient Use Efficiency in Calcareous Soils

机译：石灰性土壤扁豆农艺上钾元素和养分利用效率的评估

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Potassium (K) is considered as key element for plant growth and physiology and improvement of productivity and quality of crops. The potassium (K) reduction from agricultural soils of Indo-Gangetic plain had been observed due to rapidly increasing intensive cropping systems, in combination with imbalanced fertilization. Now, burning issue is needed to better understand the role and dynamic of K in plants and K-use efficiency of crops. Hence, this study was undertaken during two consecutive years of 2015-16 and 2016-17 to know the effects of different levels of potassium on lentil productivity, nodulation, nutrient uptake and K use efficiency. The experiment was laid out in randomized complete block design considering five treatments with thrice replicates. The treatments were T_1 (K Control), T_2 (15 kg K ha~(-1)), T_3 (30 kg K ha~(-1)), T_4 (45 kg K ha~(-1)) and T_5 (60 kg K ha~(-1)) along with the blanket dose of N_(18)P_(20)S_(10)Zn_2B_(1.5) kg ha~(-1) and cowdung 3 t ha~(-1). Yield and yield attributes of lentil responded significantly to K fertilizer. The highest mean seed yield (1684 kg ha~(-1)) and maximum seed yield increase over control (31.9%) got from T_5 treatment followed by T_4 treatment. The highest total nutrient (N, P, K, S, Zn and B) uptake, maximum nodulation and the highest protein content (29.4%) in seed was, however, recorded from the plot receiving of 60 kg K ha~(-1). Apparent K recovery efficiency was recorded higher (17.8%) from T_4 treatment. Apparent K recovery efficiency followed the order: T_4T_5T_3T_2. From the economic point of view, T_5 followed by T_4 treatment is viable and sound. The results of the experiment suggest that 60 kg K ha~(-1) might be applied along with N_(18)P_(20)S_(10)Zn_2B_(1.5) kg ha~(-1) for lentil cultivation in calcareous soils of Bangladesh. The K rates for fertilizer recommendation in lentil need to be revised to take account for highest yield by higher increasing rate of K in soil.
机译：钾（K）被认为是植物生长和生理以及提高作物生产力和质量的关键元素。由于集约化耕作系统的快速增加以及施肥不平衡，已观察到印度恒河平原农业土壤中的钾（K）减少。现在，迫切需要解决问题，以更好地了解钾在植物中的作用和动态以及农作物对钾的利用效率。因此，本研究在2015-16年和2016-17年连续两年进行，以了解不同钾水平对小扁豆生产力，结瘤，养分吸收和钾利用效率的影响。考虑了五次重复三次的处理，以随机完整区组设计进行了实验。处理方式为T_1（控钾），T_2（15 kg K ha〜（-1）），T_3（30 kg K ha〜（-1）），T_4（45 kg K ha〜（-1））和T_5（ 60 kg K ha〜（-1））以及N_（18）P_（20）S_（10）Zn_2B_（1.5）kg ha〜（-1）和cowdung 3 t ha〜（-1）的覆盖剂量。扁豆的产量和产量属性对钾肥的响应显着。 T_5处理后再T_4处理获得最高的平均种子产量（1684 kg ha〜（-1）），最大的种子产量比对照增加（31.9％）。从接受60 kg K ha〜（-1）的地块中记录到种子中最高的总养分（N，P，K，S，Zn和B）吸收，最大结瘤和最高蛋白质含量（29.4％）。 ）。 T_4处理的表观K回收效率更高（17.8％）。表观钾的回收效率遵循以下顺序：T_4> T_5> T_3> T_2。从经济角度来看，T_5继之以T_4处理是可行且合理的。实验结果表明，在石灰性土壤上，扁豆可与N_（18）P_（20）S_（10）Zn_2B_（1.5）kg ha〜（-1）一起施用60 kg K ha〜（-1）。孟加拉国。需要修改小扁豆中钾肥推荐的钾肥施用量，以考虑到土壤中钾肥增加的增加，从而获得最高的产量。

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