Effect of Gypsum Application on the Behavior of Some Rice Varieties under Salt Affected Soil Conditions

Pub Date : 2022-01-01 DOI:10.36632/ije/2022.11.1.3
Hamad, El-Hawary
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Abstract

Rice cultivation in the salt-affected soil in northern Delta regions is an important issue to confront soil deterioration. Therefore, adopting rice varieties of lower water demand and maintaining optimum productivity is becoming one of the national issues coincident with the current circumstances and expected water shortage. For this purpose, the behavior of some rice genotypes during the two summer seasons of 2018 and 2019 under gypsum amended salt-affected soil conditions and their relations is of interest. However, gypsum application positively enhanced rice varieties' growth parameters, photosynthetic pigments, relative water content, leaves potassium content, yield, yield attributes and crop water productivity (WP), meanwhile leaves sodium content, proline content, and Na + /K + ratio influenced negatively. In addition, relative reduction in the soil layer's salt content and sodium adsorption ratio (SAR), whose recorded values seemed to be affected predominantly by the crop duration period. On the other hand, Egyptian hybrid one (EHR1) rated the highest grain yield, followed by Giza 178 with the corresponding values of 4.66 and 4.26 t fed. -1 , respectively. Despite that, Sakha 107 followed by Giza 177 rated the highest water productivity varieties with the corresponding values of 0.86 and 0.80 kg m -3 , respectively.
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施用石膏对盐渍土壤条件下某些水稻品种行为的影响
北部三角洲地区盐渍土水稻种植是应对盐渍土退化的重要课题。因此,根据当前形势和预期的缺水情况,采用需水量较低的水稻品种,保持最佳生产力,已成为国家面临的问题之一。为此,研究了2018年和2019年两个夏季,部分水稻基因型在石膏加盐土壤条件下的表现及其相互关系。施用石膏对水稻品种的生长参数、光合色素、相对含水量、叶片钾含量、产量、产量属性和作物水分生产力(WP)均有显著的促进作用,对叶片钠含量、脯氨酸含量和Na + /K +比均有显著的影响。此外,土壤层含盐量和钠吸附比(SAR)的相对降低,其记录值似乎主要受作物生育期的影响。埃及杂交种EHR1产量最高,吉萨178次之,产量分别为4.66和4.26 t。尽管如此,萨哈107的水分生产力最高,吉萨177次之,分别为0.86和0.80 kg m -3。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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