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为了探索水稻根系形态与机能的调控途径 ,设置施量、施肥法和还原性土壤等因素的试验 ,结果明确 :( 1)适量的NPK肥料 ( 1m2 施N18g、P4g、K18g)于前期、中期分施 ,显著促进了根系形态发育 ,增强根系机能 ;( 2 )强还原性土壤环境严重抑制了根系 ,特别是抑制下层根系的生长 ,显著削弱根系机能 ;( 3)稻谷产量与根系干重和根系机能呈极显著正相关。说明调节NPK养分供应 ,改善土壤通气性 ,是培育形态发达、机能高而持久的根系 ,达到稳定高产的重要途径。
In order to explore the regulation of rice root morphology and function, experiments were conducted to determine the amount of fertilizer, fertilization and reducing soil. The results showed that: (1) NPK fertilizer (1m2 N18g, P4g, K18g) (2) The strong reducing soil environment inhibited the root system seriously, especially the growth of the lower root system, and significantly weakened the root system function. (3) The relationship between the grain yield and root dry weight and root system Function was extremely significant positive correlation. It shows that regulating NPK nutrient supply and improving soil aeration are important ways to cultivate well-developed, high-performance and long-lasting root system and achieve stable and high yield.