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- Title
氮肥运筹对豫南地区优质食味粳稻产量和 品质的影响.
- Authors
雷振山; 李猛; 卫云飞; 刘秋员; 刘 娟; 王付娟; 季新
- Abstract
In order to determine the suitable nitrogen fertilizer management method for japonica rice with good taste in southern Henan, the effects of different fertilizer management methods(T1:70% tiller fertilizer, T2:70% panicle fertilizer at third leaf to top, T3:70% panicle fertilizer at second leaf to top, T4:70% panicle fertilizer at first leaf to top, T5:30% tiller fertilizer+40% panicle fertilizer at third leaf to top, T6:30% tiller fertilizer+40% panicle fertilizer at second leaf to top, T7:30% tiller fertilizer+40% panicle fertilizer at first leaf to top)on yield and quality of japonica rice with good taste were studied under the conditions of 240 kg/ha nitrogen and 30% basal nitrogen fertilizer applied before transplanting with Nanjing 9108 as material. The results showed that, compared with the treatments without tiller fertilizer, application of tiller fertilizer could increase the number of effective panicles;topdressing panicle fertilizer was beneficial to the increase of percentage of productive tiller, grain number per panicle, proportion of high efficient leaf area and the SPAD value of high efficient leaf, which were higher in T5 treatment, and decreased the decay rate of leaf area and SPAD value of high efficient leaf, so as to increase the photosynthetic matter production in the later period. However, when the topdressing time of panicle fertilizer was delayed, the dry matter accumulation and grain yield showed a decreasing trend, and the grain yield of T5 treatment was the highest, which was significantly higher than the other treatments, followed by T6 treatment. For rice quality, topdressing panicle fertilizer and delay of panicle fertilizer were beneficial to the improvement of milling quality, but not conducive to the improvement of appearance quality and cooking quality. Among them, the chalky grain rate, chalkiness degree and protein content of T1 treatment were the lowest, followed by T5 treatment;the amylose content and taste value of T1 treatment were the highest, followed by T5 treatment. It is concluded that under the nitrogen application rate of 240 kg/ha, the suitable nitrogen fertilizer management method is 30% basal fertilizer+ 30% tiller fertilizer+40% panicle fertilizer at third leaf to top, which could improve the grain yield and give consideration to the rice quality, and is suitable for spreading and applying in southern Henan.
- Subjects
HENAN Sheng (China); NANJING (Jiangsu Sheng, China); NITROGEN fertilizers; RICE quality; LEAF area; FERTILIZER application; AMYLOSE; GRAIN yields; HYBRID rice
- Publication
Journal of Henan Agricultural Sciences, 2023, Vol 52, Issue 6, p12
- ISSN
1004-3268
- Publication type
Article
- DOI
10.15933/j.cnki.1004‐3268.2023.06.002