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Effects of Coupling Water and Fertilizer on Physiological Property and Nutrient Accumulate and Distribution of Oats

Author: YangManHong
Tutor: LiLiJun；LiuJingHui
School: Inner Mongolia Agricultural University
Course: Crop Cultivation and Farming System
Keywords: Oat Photosynthetic characteristics WUE Accumulation and Distribution Yield
CLC: S512.6
Type: Master's thesis
Year: 2011
Downloads: 37
Quote: 0
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Abstract


Yinshan Mountain area Different Water and nutrient accumulation indicators of the impact of the allocation pattern and water use efficiency, yield, oats physiological characteristics Yinshan Mountain area dry oats production is intended to provide guidance. The results show that: the different growth stages W 3 overall highest chlorophyll content. The net photosynthetic rate and increase with increasing moisture gradient. Transpiration rate increased with the moisture gradient increases W 2 P 2 processing water use efficiency highest. Photosynthetic rate increases with the amount of phosphorus fertilizer increased first and then decreased trend. Physiological indicators of significant differences with the moisture, the difference was not significant with the fertilizer. The SOD activity irrigation slow increase stress aggravate activity increased. MDA decreased after irrigation, stress increased MDA content increased. The MDA content W 1 gt; W 2 gt; W 3 , the different treatment of free proline content W 1 gt; W 2 gt; W 3 , the highest value in the flowering stage. Cell membrane permeability W 1 gt; W 2 gt; W 3 . Mature root activity minimum, significant differences between the treatments. Organic matter content W 1 gt; W 2 gt; W 3 , the total phosphorus content of W 2 gt; of W 1 gt; the the W 3 , available nutrients showed W 2 gt; W 1 gt; W 3 . Bulk density W 1 the W 2 the W 3 differences significant. Water use efficiency between the different processing performance for W 2 gt; W 1 gt; W 3 . Total dry mass W 3 gt; W 2 gt; W 1 . The content of different organs grain gt; the stem stem gt; leaves, grain accounts for about 45% -55% of the total, 24% -33%, leaves 23% -27%. Booting Stage highest N content. Highest leaf N content the jointing of the W of 2 P 5 processing, booting stage N content of leaves gt; spike gt; stems. Stem P content in the highest point in W 2 P 5 processing, the booting stage P content Spike gt; stem gt; leaves, flowering period P content Sui gt; blade gt; stems . W 2 P 5 the handle stem K content in the highest. The biological yield performance under different water conditions for W 1 P 3 handle the highest, W , 2 P 4 processing highest, W , 3 P 4 Processing highest. Phosphate fertilizer gradient 4, for example, W 3 processing than W 2 5% higher than the W 1 29%. Grain yield performance under different water conditions W 1 P 2 treatment was the highest. W 2 of P 2 treatment was the highest. The W 3 of P 2 processing the highest, the phosphate fertilizer gradient II, for example, W 3 handling more W 2 high 6%, representing W to 1 51.8%. Biological and grain yields were maximum in P fertilizer 90kg/hm 2 appear.

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CLC: > Agricultural Sciences > Crop > Cereal crops > Wheat > Oat
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