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- W3151976332 abstract "A pot experiment was conducted under water deficit and adequate water-supplied conditions with two maize genetypic varieties (Shaandan 9 and Shaandan 911) to study the effects of nitrogen, potassium and glycinebetaine (GlyBet) on the dry matter and grain yields as well as water use efficiency (WUE). Determinations were made at different stages of the two varieties for revealing the function of these factors in increasing plant resistance to drought. Results showed that under a water-stressed condition, dry matter and grain yield were significantly reduced. However, the response of the two varieties to water stress was different: Shaandan 9 was significantly higher in dry matter and grain yields, and therefore could be regarded as a drought-resistant variety compared to Shaandan 911.Application of nitrogen, potassium and glycinebetaine raised dry matter and grain yield to different levels, and thereby alleviated the water stress and increased water use efficiency. These effects were higher for Shaandan 911 than for Shaandan 9. Under water-stressed conditions, application of N fertilizer, either at low rate or at high rate, significantly increased dry matter, grain yield and water use efficiency.A significant different effect was found for Shaandan 911 between N rates, but not so for Shaandan9. However,with supplemental water supply, effects of N fertilization were obviously decreased, showing that in addition to supplying nutrient, N fertilizer has a function in increasing drought-resistance of the crop. Potassium and glycinebetaine exhibited a remarkable function in increasing dry matter and grain yields as well as water use efficiency under water stress while such effects were obviously declined, even vanished, with supplemental water supply, indicating the important contribution of these factors in rise of drought-resistance ability of a crop." @default.
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- W3151976332 date "2005-01-01" @default.
- W3151976332 modified "2023-09-24" @default.
- W3151976332 title "Effects of Application of Nitrogen, Potassium and Glycinebetaine on Alleviation of Water Stress to Summer Maize" @default.
- W3151976332 hasPublicationYear "2005" @default.
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