CWE / 156/2017 当前世界环境 0125 - 888 0125 - 895 Enviro研究出版社 cwe - 10 - 11 - 000 施用石灰对土壤性质、产量和小麦养分吸收的影响 4 丹麦科技大学 农业化学与生物化学系 Hajee穆罕默德 Dinajpur 5200 孟加拉国 2009-07-09 10.12944 / CWE.4.1.06 卷4 问题1 39-47 摘要

以白云石(CaCO3.MgCO3)为原料,对其进行了8种处理。记录小麦收获时的产量和产量构成因素,分析籽粒和秸秆中磷、硫、钙和镁的含量。对采后土壤pH、有效磷、钙、镁进行了分析。施用不同比例的石灰逐渐提高了土壤pH,提高了土壤中磷、钙、镁的有效性。采后土壤pH值与土壤有效钙、镁含量呈正相关。小麦籽粒产量与收获后土壤pH、有效磷、钙、镁含量呈正相关。分蘖数植株-1,颖花穗-1,粒穗-1,籽粒产量和秸秆产量均受施灰影响显著。T5处理(2.0 t lime ha-1)的籽粒产量为4659 kg ha-1,与T6、T7、T8处理相同,但高于T1、T2、T3和amp处理;T4治疗。 Liming markedly increased S and Mg concentrations of wheat grain but the concentrations of P and Ca remained unaffected. Total uptake of P, S, Ca and Mg were increased due to application of lime which was mainly associated with increased wheat yields. The findings showed that liming is beneficial for wheat cultivation in the Ranishankail soil series of Dinajpur. The application of 2.0 t lime ha-1 appears to be optimum for desired soil pH for wheat (>pH 6.0), increased availability of nutrients and ultimately increased wheat yield.

关键字 小麦 石灰 粮食 产量组件
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