Manivannan S, Balamurugan M, Parthasarathi K, Gunasekaran G, Ranganathan L S
Division of Vermibiotechnology, Department of Zoology, Annamalai University, Annamalainagar, India.
J Environ Biol. 2009 Mar;30(2):275-81.
Field experiments were conducted at Sivapuri, Chidambaram, Tamil Nadu to evaluate the efficacy of vermicompost, in comparison to inorganic fertilizers-NPK, on the physio-chemical and biological characteristics of the soils--clay loam soil (CLS) and sandy loam soil (SLS) and on the growth, yield and nutrient content of beans--Phaseolus vulgaris. Results showed that the application of vermicompost @ 5 tonnes ha(-1) had enhanced significantly the pore space (1.09 and 1.02 times), water holding capacity (1.1 and 1.3 times), cation exchange capacity (1.2 and 1.2 times). It reduced particles (1.2 and 1.2 times), and bulk density (1.2 and 1.2 times), pH (1 and 1.02 times) and electrical conductivity (1.4 and 1.2 times) and increased organic carbon (37 and 47 times), micro (Ca 3.07 and 1.9 times, Mg 1.6 and 1.6 times, Na 2.4 and 3.8 times, Fe 7 and 7.6 times, Mn 8.2 and 10.6 times, Zn 50 and 52 times and Cu 14 and 22 times) and macro (N 1.6 and 1.7 times, P 1.5 and 1.7 times, K 1.5 and 1.4 times) nutrients and microbial activity (1.4 and 1.5 times) in both soil types, particularly more in CLS. The growth, yield (1.6 times) and quality (protein (1.05 times) and sugar (1.01 times) content in seed) of bean were enhanced in CLS than SLS. On the other hand, the application of inorganic fertilizers @ 20:80:40 kg ha(-1) has resulted in reduced porosity (1.03 and 1.01 times), organic carbon (1.04 and 9.5 times) and microbial activity (1.02 and 1.03 times) in both soil types.
在印度泰米尔纳德邦奇丹巴拉姆的西瓦普里进行了田间试验，以评估与无机肥料NPK相比，蚯蚓堆肥对土壤（粘壤土（CLS）和砂壤土（SLS））的物理化学和生物学特性以及菜豆（菜豆属）生长、产量和养分含量的影响。结果表明，施用5吨公顷⁻¹的蚯蚓堆肥显著提高了孔隙空间（分别提高1.09倍和1.02倍）、持水能力（分别提高1.1倍和1.3倍）、阳离子交换能力（分别提高1.2倍和1.2倍）。它降低了颗粒（分别降低1.2倍和1.2倍）、容重（分别降低1.2倍和1.2倍）、pH值（分别降低1倍和1.02倍）和电导率（分别降低1.4倍和1.2倍），并增加了有机碳（分别增加37倍和47倍）、微量元素（钙分别增加3.07倍和1.9倍、镁分别增加1.6倍和1.6倍、钠分别增加2.4倍和3.8倍、铁分别增加7倍和7.6倍、锰分别增加8.2倍和10.6倍、锌分别增加50倍和52倍、铜分别增加14倍和22倍）和大量元素（氮分别增加1.6倍和1.7倍、磷分别增加1.5倍和1.7倍、钾分别增加1.5倍和1.4倍）以及两种土壤类型中的微生物活性（分别增加1.4倍和1.5倍），在粘壤土中尤其增加得更多。与砂壤土相比，粘壤土中菜豆的生长、产量（提高1.6倍）和品质（种子中的蛋白质（提高1.05倍）和糖分（提高1.01倍）含量）得到了提高。另一方面，施用20:80:40千克公顷⁻¹的无机肥料导致两种土壤类型的孔隙率降低（分别降低1.03倍和1.01倍）、有机碳降低（分别降低1.04倍和9.5倍）和微生物活性降低（分别降低1.02倍和1.03倍）。
