Abstract
The main research objective of this study is drought resistant mechanism of rice. Using Xinliangyou6 rice as materials, the effects of stress on models growth and physiological characteristic and yields are studied. The results indicate that the plant height were decreased, the crop-stem lodging resistance was effectively increased, the physiological index changes occured, the content of Methane Dicarboxylic Aldehyde and proline and total soluble sugar marly all increase, which compared with the treatment of all the water (CK) was applied always, the reduction was significant. Compared with the CK, the yields of the short time water stress treatment in tilling stage (3d) increased 9.2%. With long time water stress by -75 Pa in booting stage, the yield decreased and it will be decreased about 42% in the treatment for the 7-day drought period.
Highlights
Drought will be one of the worst natural disasters that human beings have to face for a long time
The influence of drought treatment on rice shape dynamic: The influence of drought treatment on rice height: As can be shown in Fig. 1, drought treatment has a restrain on rice height
Booting stage drought has greater restrain on rice height than tillering stage, the height of tillering stage+booting stage drought treatment has the most significant reduction when compared with CK
Summary
Drought will be one of the worst natural disasters that human beings have to face for a long time. How to solve drought’s negative impact on rice yield is a very serious agricultural production problem we are facing and is waiting to be solved. Anhui Province is one of the major rice producing provinces, Jianghuai hilly region is an important rice production center and commodity grain base (Huang et al, 2005). This region, which belongs to the subtropical to temperate transitional climate zone, is suitable for the growth of season rice. Combined with other reasons such as complex hilly topography, aging irrigation project and backward irrigation techniques, drought stress is still the bottleneck that constrains high rice yield in this area (Xiao et al, 2008)
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