Using plant analysis to predict yield losses caused by sulphur deficiency
Using plant analysis to predict yield losses caused by sulphur deficiency
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DOI：
10.1111/j.1744-7348.2001.tb00093.x
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发表时间：
2001-01-01
影响因子：
2.6
通讯作者：
McGrath, SP
中科院分区：
文献类型：
--
作者：
Blake-Kalff, MMA;Zhao, FJ;McGrath, SP
在英国，由于二氧化硫排放量的减少和化肥做法的改变，由于缺硫导致的农作物产量损失正在增加。因此，需要一种可靠实用的诊断指标，在生长季早期预测是否需要使用S化肥，也避免在不必要时使用化肥。一个成功的诊断指标应该在整个工厂开发过程中可靠和稳定，但也应该很容易测量，具有很高的精确度，并且尽可能少的工作量。本文讨论了现行S缺乏症诊断试验中存在的困难和问题，如总S、硫酸盐、N：S比值等。S缺乏的一个更可靠、更实用的指标是苹果酸：硫酸盐峰面积比，目前正在开发供商业实验室及其客户使用的指标。
Yield losses in agricultural crops as a result of sulphur deficiency are increasing in the UK, because of the decrease in sulphur dioxide emissions and changes in fertiliser practices. Therefore, there is a need for a reliable and practical diagnostic indicator to predict early in the growing season whether it is necessary to apply S fertiliser, but also to avoid the application of fertiliser when not necessary. A successful diagnostic indicator should be reliable and stable throughout plant development, but also easily measured with great accuracy and as little effort as possible. In this paper the difficulties and problems with currently used diagnostic tests for S deficiency, such as total S, sulphate or the N:S ratio, will be discussed. A more reliable and practical indicator of S deficiency is the malate:sulphate peak area ratio which is at present being developed for use by commercial laboratories and their customers.