ZHOU Chao,WANG Jun-qiang,HAN Ye-hui,et al.Effects of Different Nitrogen Application Rate and Planting Density on Yield of Nendan 19[J].HEILONGJIANG AGRICULTURAL SCIENCES,2020,(12):26-29.[doi:10.11942/j.issn1002-2767.2020.12.0026]
不同施氮量和种植密度对嫩单19产量的影响
- Title:
- Effects of Different Nitrogen Application Rate and Planting Density on Yield of Nendan 19
- Keywords:
- maize; nitrogen application rate; planting density; yield
- 文献标志码:
- A
- 摘要:
- 为促进黑龙江省玉米增产增效栽培，本研究以紧凑耐密型玉米品种嫩单19为试验材料，设置4个施氮量为0（N0）、120 kg?hm-2（N1）、240 kg?hm-2（N2）、360 kg?hm-2(N3)；3个种植密度4.5万株?hm-2(D1)、6.0万株?hm-2(D2) 和7.5万株?hm-2（D3），研究施氮量及种植密度对玉米品种嫩单19单株及群体干物质积累特性、产量及其构成因素的影响。结果表明：同一种植密度条件下，氮肥施用水平对千粒重、穗粒数、产量、花后单株干物质积累量、花后群体干物质积累量影响显著；同一施肥水平下，增加种植密度嫩单19的千粒重和穗粒数明显降低。本研究根据嫩单19的品种特征，合理增加了种植密度、减少施氮量，使群体的光能及养分的利用率能够得到有效的利用，进而获得更高的产量。综合本试验研究表明玉米品种嫩单19的适宜种植密度为7.5万株?hm-2，最佳施氮量为240 kg?hm-2。
- Abstract:
- In order to promote maize production and efficiency in Heilongjiang Province,taking the compact and dense-tolerant maize variety Nendan 19 as the test material,this study set 4 nitrogen application rates of 0 (N0),120 kg?hm-2(N1),240 kg?hm-2(N2),360 kg?hm-2(N3),three planting densities of 45 000 plants?hm-2 (D1),〖JP〗60 000 plants?hm-2 (D2) and 75,000 plants?hm-2 (D3) were used to determine the optimal nitrogen application rate and planting density for synergistically increasing spring maize yield.The population dry matter accumulation characteristics,yield and the influence of its constituent factors.The results showed that under the same planting density,the nitrogen fertilizer application level had a significant impact on the 1000-grain weight,grain number per ear,yield,dry matter accumulation per plant after anthesis,and dry matter accumulation of the population after anthesis;increased planting density,the same fertilization level the thousand-grain weight of Nendan 19 and the number of grains per spike were reduced.In this study,based on the characteristics of Nendan 19,the planting density was increased and the amount of nitrogen was reduced,so that the light energy and nutrient utilization rate of the colony could be effectively used,and higher yields could be obtained.The comprehensive experimental research showed that the suitable planting density of maize variety Nendan 19 was 75 000 plants?hm-2 and the optimal nitrogen application rate was 240 kg?hm-2.
参考文献/References:
［1］李少昆,赵久然,董树亭,等.中国玉米栽培研究进展与展望[J].中国农业科学，2017,50（11）:1941-1959.
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备注/Memo
收稿日期：2020-08-21