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- Title
长期有机无机肥配施对水稻生长, 干物质积累及产量的影响.
- Authors
杨胜玲; 黄兴成; 李渝; 刘彦伶; 张雅蓉; 张艳; 张文安; 蒋太明
- Abstract
To clarify the effects of different fertilization treatments on rice growth, dry matter accumulation, transport and yield, to provide reference for integrated nutrient management measures of rice. Relying on 25-year long-term positioning experiments, through field experiments, no fertilization control (CK), conventional chemical fertilizers were set. (NPK), 25% organic fertilizer to replace chemical fertilizer (1/4M+3/4NP), 50% organic fertilizer to replace chemical fertilizer (1/2M+1/2NP), 100% organic fertilizer to replace chemical fertilizer (M) and organic and inorganic fertilizers Six experimental treatments of MNPK were used to explore the effects of different fertilization treatments on rice growth, dry matter accumulation, transport and yield. The results showed that the order of dry matter accumulation in rice shoots at maturity stage was MNPK>1/4M+3 /4NP>1/2M+1/2NP>NPK>M>CK, MNPK and 1/4M+3/4NP treatments increased grain yield by 12.42% and 2.04%, respectively, compared with NPK treatments. The dry matter accumulation in rice grains mainly came from post-flowering Dry matter accumulation, the contribution rate of dry matter accumulation after flowering in each treatment to grain was 50.17%-65.40%, among which, each treatment with organic fertilizer was significantly higher than that in CK and NPK treatments. At the maturity stage of rice, the percentage of grains in each treatment with organic fertilizer was significantly higher than that of CK and NPK treatments. Compared with CK and NPK treatments, the ratio of organic and inorganic fertilizers was higher than that of CK and NPK treatments. Compared with CK or NPK treatments, each treatment of organic and inorganic fertilizers significantly promoted rice tillering, increased the relative chlorophyll content (SPAD) value of leaves and leaf area index, and also significantly optimized various yield components of rice. Increase rice yield. The agronomic traits of rice are significantly or extremely significantly positively correlated with the number of effective panicles, and are positively correlated with the 1000-grain weight and the number of grains per panicle. Under the condition of long-term application of organic fertilizers, 25% of organic fertilizers replace chemical fertilizers to promote rice growth and development, Improving the accumulation and transfer of dry matter is the best fertilization measure to increase rice yield in the yellow-soiled paddy soil area.
- Subjects
FERTILIZERS; ORGANIC fertilizers; LEAF area index; FERTILIZER application; RICE; CHLOROPHYLL; PADDY fields; GRAIN yields
- Publication
Acta Agriculturae Zhejiangensis, 2022, Vol 34, Issue 9, p1815
- ISSN
1004-1524
- Publication type
Article
- DOI
10.3969/j.issn.1004-1524.2022.09.01