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- Title
节水灌溉与施磷量对玉米磷累积和分配的影响.
- Authors
闫 飞; 巩 元 勇; 马 兴 旺
- Abstract
[Objective] The coupling effect of water and phosphorus was discussed by changing the moist area and content of soil with different irrigation modes, so as to achieve the purpose of water saving, fertilizer saving, high quality and high yield.[Methods] The effects of partial root-zoon drying (PRD) and defect irrigation (DI) with different amount of phosphorus application on dry matter mass, phosphorus accumulation and distribution rate, and related enzyme activities in different parts of maize were studied by pot culture experiment.[Results] The total dry matter per plant, shoot dry weight and root dry weight of Maize under DI irrigation with high phosphorus were the highest, the root dry weight under PRD irrigation with low phosphorus was the lowest, and the root dry weight ratio of high phosphorus treatment under PRD and DI irrigation was the lowest; Under the medium phosphorus treatment, the total phosphorus content, shoot phosphorus content and root phosphorus uptake of PRD irrigation treatment were significantly higher than that of DI treatment, while the both of total phosphorus content and aboveground phosphorus content of maize plant, and total phosphorus content of maize plant under low and medium phosphorus treatment of DI irrigation were the lowest; All water and phosphorus treatments had no significant effect on the activity of acid phosphatase in maize leaves; On root acid phosphatase activity, there was almost no significant difference among different P application rates under the same irrigation mode, while the medium phosphorus treatment under DI irrigation was significantly higher than that under PRD irrigation; In terms of SOD activity, except for PRD irrigation with low phosphorus treatment, there was no significant difference among other treatments. PRD irrigation with high phosphorus treatment and DI irrigation with low and high phosphorus treatment were significantly higher than PRD irrigation with low phosphorus treatment.【Conclusion】 High phosphorus treatment under DI irrigation significantly increased maize biomass, and low phosphorus with phosphorus treatment significantly increased root phosphorus distribution rate, while PRD irrigation combined with appropriate amount of phosphorus fertilizer could effectively improve the phosphorus nutrient status of plants, and more effectively cope with the adaptability of plants to drought stress.
- Publication
Xinjiang Agricultural Sciences, 2021, Vol 58, Issue 6, p981
- ISSN
1001-4330
- Publication type
Article
- DOI
10.6048/j.issn.1001-4330.2021.06.001