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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Wheat production functions under irrigated saline environment and foliar potassium fertigation
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Wheat production functions under irrigated saline environment and foliar potassium fertigation

机译：灌溉盐水环境下的小麦生产功能和叶面钾灌溉

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摘要

A field experiment was conducted for two consecutive years to develop management alternatives for wheat cultivars (salt-tolerant and salt non-tolerant) cultivated under irrigated saline environment (groundwater, 4, 8 and 12 dS m(-1)) and foliar potassium fertigation. The grain yield of wheat cultivars decreased with the increase in salinity levels of irrigation water. The foliar potassium fertigation during the heading stage of wheat cultivars ameliorated the adverse effect of salinity and resulted in the increase in grain yield. In this study, empirical equations for wheat yield known as production function have been developed. The production functions were developed keeping grain yield parameter as output, besides the many input parameters pertaining to quantity and quality of the irrigation water, quantity of potassium applied as foliar spray and rainfall depth during the crop growth period. The production function with higher coefficient of determination (R-2) may be used to predict grain yield of both salt-tolerant and salt non-tolerant cultivars under different saline irrigation regimes, rainfall and irrigation water depths, besides the dose of potassium sulphate (K2SO4) for foliar spray. The production function which gave the highest R-2 value (i.e. 0.82 for KRL-1-4 and 0.97 for HD 2894 wheat cultivars) could be used for foliar spray under different salinity regimes with high expectation of grain yield. The predicted grain yield and estimated quantity of potassium under different salinity levels of irrigation water may prove useful to different stakeholders for enhancing the wheat yield in high saline water areas. The stakeholders can predict the grain yield under similar circumstances as explained in this experiment and estimate the appropriate potassium doses to be applied for enhancing the wheat yield.
机译：连续两年进行田间实验，为在灌溉盐水环境（地下水，4,8和12ds m（-1））和叶钾施肥中培养的小麦品种（耐盐和盐不耐受）的管理替代品。 。小麦品种的籽粒产量随着灌溉水的盐度水平的增加而降低。小麦品种标题期间的叶面施肥改善了盐度的不良影响，导致籽粒产量的增加。在该研究中，已经开发出作为生产功能的小麦产量的经验方程。除了与灌溉水量的数量和质量有关的许多输入参数外，生产功能将使谷物产量参数保持为输出，在作物生长期期间含有叶面喷雾和降雨量深度的钾的数量。具有较高的测定系数（R-2）的生产功能可用于预测不同盐水灌溉制度，降雨和灌溉水深，除了硫酸钾（ K2SO4）用于叶面喷雾。产生最高R-2值的生产功能（即，用于HD 2894小麦品种的KRL-1-4和0.97的0.82）可用于不同盐度制度的叶面喷雾，具有较高的籽粒产量。在不同的盐度水平下预测的谷物产量和估计的钾水平可能对不同的利益攸关方具有证明，以提高高盐水区域中的小麦产量。利益攸关方可以在类似情况下预测谷物产量，如本实验中所述，并估计适用的钾剂量以提高小麦产量。

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