Effects of Applying Different Doses of Selenite to Soil and Foliar at Different Growth Stage on Selenium Content and Yield of Different Oat Varieties.

Under the same Se application conditions, oat yield in the JZ ecological region and JXB ecological region showed a trend of first increasing and then decreasing with the increase in the amount of Se, and similar results were obtained in previous studies on buckwheat [ 21 ].

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Using the extremely significant factors on oat yield, that is, Se dose and variety, to construct an oat yield prediction model, the results were as follows: (1) Y = −0.007A 2 + 1.079A + 607.012B + 1173.492 In the formula, A was the Se dose, B was the variety; the model correlation coefficient r = 0.730, the regression model F value was 7.406, and the regression was significant ( Table 2 ).

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