Research on optimal irrigation of Hexi seed production maize based on entropy method, AHP and TOPSIS model

doi:10.14088/j.cnki.issn0439-8114.2022.16.002

Abstract

Abstract: The paper comparatively studied the effects of different water treatments on production benefits of maize under ridge film furrow irrigation and mulch film flood irrigation to provide a basis for establishing high efficiency and water-saving cultivation mode for maize production in Hexi Corridor. In this field experiment, eight different water treatment levels were set under two cultivation modes. At the same time, TOPSIS model was constructed based on the AHP analytic hierarchy method and the entropy weight method, and the optimal cultivation mode plan was obtained by analyzing the agronomic characteristics and economic benefits of seed production maize with this model. The results showed that treatment F3 ranked first, followed by treatment F2, FC, F1, T2, T3, T1, and TC according to the relative proximity, suggesting that the best economic benefits were acquired in treatment F3 under different irrigation modes and water treatments. Under the maize production model of film mulching flood irrigation in Hexi Corridor, the maize was irrigated 7 times during the whole growth period, with the irrigation quota per time of 50 mm and the total irrigation quota of 350 mm, and the water control in the three growth periods was 80%, 60%, and 60%, so the economic benefit was maximized in all treatments in the experiment. In a conclusion, compared with ridge-film furrow irrigation, film-mulched flood irrigation was less in irrigation amount, higher in maize yield and better in benefits.

Key words: maize, ridge film furrow irrigation, film mulching flood irrigation, TOPSIS model

CLC Number:

S513

MIAO Chun-qing, CAI Zi-wen, ZHENG Rong, BAI Jing, WANG Juan, WANG Tuo-he, WANG Xue-qiang. Research on optimal irrigation of Hexi seed production maize based on entropy method, AHP and TOPSIS model[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(16): 12-17.

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