Effects of Tillage and Salt Washing on Growth and Yield of Rice in Saline-alkali Soil

doi:10.3969/j.issn.1006-8082.2018.04.016

Abstract

Abstract:

Decreasing the salt content was the key measure for rice planting in saline-alkali land. A field experiment was conducted to study the effects of tillage and salt washing on growth and yield of rice in saline-alkali soil. The results showed that soil electrical conductivity significantly decreased in winter tillage treatment compared with no-tillage treatment, and winter tillage combined with salt washing had further effects. Winter tillage treatments has low yellow leaf percentage, but leaf area index, biomass and nitrogen uptake increased significantly compared with no-tillage treatment. Salt washing decreased soil electrical conductivity and improved rice growth and yield in different tillage treatments. However, the differences of these parameters were not significant in salt washing treatment under winter tillage, and significant differences were found in salt washing treatment under no-tillage. Winter tillage treatment increased rice yield by 66.7% than no-tillage treatment.

Key words: rice, saline-alkali soil, winter tillage, salt washing

摘要：

在盐碱地种植水稻的关键是降低土壤盐碱含量。采用大田试验，研究了大田耕作方式及洗盐方式对水稻生长及产量的影响。结果表明，冬耕能显著降低大田耕作层的土壤电导率，冬耕结合洗盐的方式效果更好。与不冬耕处理相比，冬耕处理水稻叶片黄叶率显著降低，叶面积指数、干物质及氮积累量显著增加。不同耕作方式下，洗盐均能降低土壤电导率，改善水稻生长状况，提高产量。在冬耕条件下，洗盐2次和洗盐1次的处理间差异不显著。不冬耕条件下，洗盐2次和洗盐1次的处理，除了黄熟期生物量和产量差异不显著外，其他水稻生长参数差异均达显著水平。与不冬耕处理相比，冬耕显著提高了水稻的产量，增产达66.7%。

关键词: 水稻, 盐碱地, 冬耕, 洗盐

CLC Number:

S511.04

向镜1,张义凯1,朱德峰1*,周红2,张茂林2,毕崇明2,陈惠哲1,张玉屏1. 盐碱地耕作和洗盐方式对水稻生长及产量的影响[J]. 中国稻米, DOI: 10.3969/j.issn.1006-8082.2018.04.016 .

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