WANG Li-nan,MA Wen-dong,YANG Qing,et al.Effects of Planting Density and Nitrogen Fertilizer Application Amount on Growth and Yield of Longjing 57[J].HEILONGJIANG AGRICULTURAL SCIENCES,2022,(02):1-5.[doi:DOI:10.11942/j.issn1002-2767.2022.02.0001]
种植密度和施氮量对龙粳57生长发育及产量的影响
- Title:
- Effects of Planting Density and Nitrogen Fertilizer Application Amount on Growth and Yield of Longjing 57
- Keywords:
- rice; planting density; nitrogen fertilizer application amount; growth; yield
- 文献标志码:
- A
- 摘要:
- 为明确水稻品种龙粳57的适宜栽培模式,以糯稻品种龙粳57为试验材料,设置2个种植密度(20和24穴·m-2)、4个施氮量[0 kg·hm-2(N0)、115 kg·hm-2(N1)、138 kg·hm-2(N2)和161 kg·hm-2N3)],探究种植密度与施氮水平对糯稻品种龙粳57不同时期的叶面积指数、光合势、干物质积累、产量及氮素利用效率的影响。结果表明:同一种植密度条件下,氮肥施用水平对不同时期叶面积指数、光合势、茎鞘物质输出率、穗数、产量和氮素利用效率影响显著;同一施氮水平下,增加种植密度后龙粳57的不同时期叶面积指数、茎鞘物质输出率、穗数、千粒重、产量和氮素利用效率等指标均有不同程度的提高。因此,应根据品种选择适宜的种植密度和施氮量,以便更好地发挥品种特性,提高光能利用率和养分利用效率,从而获得更高的产量。综合产量指标和氮素利用效率得出,龙粳57的适宜栽培模式为密度24穴·m-2,施氮量115 kg·hm-2。
- Abstract:
- In order to clarify the appropriate cultivation model of rice variety Longjing 57,the glutinous rice variety Longjing 57 was used as the test material,set two planting densities(20 and 24 holes·m-2),and four nitrogen application rates(N0-0 kg·ha-1,N1-115 kg·ha-1,N2-138 kg·ha-1 and N3-161 kg·ha-1),to explore the effects of planting density and nitrogen application amount on the leaf area index,photometric combination,dry matter accumulation,yield and nitrogen utilization efficiency of the glutinous rice variety Longjing 57.The results showed that under the same planting density,the nitrogen fertilizer application amount had significant effects on leaf area index,photosynthetic potential,stem and sheath material output rate,panicles number,yield,and nitrogen use efficiency.As planting density increased,the leaf area index,stem and sheath material output rate,number of panicles,1 000-grain weight,yield and nitrogen use efficiency of Longjing 57 improved in different degrees.Therefore,according to the characteristics of the variety,choosing the appropriate planting density and nitrogen application rate could exert the characteristics of the variety better,improve the light energy utilization and nutrient utilization efficiency,and obtain higher yields.Integrated yield index and nitrogen utilization efficiency,the suitable cultivation mode of Longjing 57 was that the planting densities at 24 holes·m-2 and the nitrogen fertilizer application rate at 115 kg·ha-1
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备注/Memo
收稿日期:2021-11-06
基金项目:黑龙江省农业科学院院级课题(2020FJZX036)。
第一作者:王立楠(1979-),男,硕士,助理研究员,从事水稻遗传育种研究。E-mail:sds0454@163.com。
通信作者:张云江(1970-),男,硕士,研究员,从事水稻遗传育种研究。E-mail:sdszyj@163.com。