Effects of Irrigation and Fertilization Management on Yield and Quality of Rice and the Establishment of a Quality Evaluation System

Yield and rice quality indicators of crops are a direct reflection the rational irrigation fertilizer strategy. However, effects controlled (CI) combined with split application fertilization managements (straw returning, organic fertilizer, conventional fertilizer) on not clear in southeast China. This study aims at exploring three applied under CI or flooding yield, quality, enzyme activity, soluble sugar content including 43 indicators, to determine optimal comprehensive evaluation model, management, representative indexes. The results showed that compared CF (CI + fertilizer), CS straw returning) significantly increased yield (27.65%), water use efficiency (6.20%), chalky grain rate (9.67%), chalkiness (1.83%), protein (4.29%), amylose (0.33%), indicating improved milling but decreased cooking appearance quality. was mainly because promoted activities alpha-amylase, ADPG (ADP-glucose pyrophosphorylase), GBSS (granule-bound starch synthase) reduced rice. Grey relational degree analysis (GRD), entropy method (ETM), TOPSIS (the technique for order preference by similarity an ideal solution) were used comprehensively evaluate determined treatments could synergistically improve five indexes (adhesive strength, HPV, ADPG, (leaf), yield) model can be as best These provide scientific management practices high-yield high-quality cultivation, which may promising cleaner production