双穗型糯玉米新品种万彩糯88对种植密度的响应

doi:10.7668/hbnxb.20192683

摘要/Abstract

摘要：

为筛选出双穗型糯玉米新品种万彩糯88适宜的种植密度,发掘其生产潜力,采用不同大田种植密度试验,探讨重要植株性状、双穗率、产量及其产量构成性状对种植密度的响应。结果表明,随着种植密度的增加,株高、穗位高、双穗抽丝间隔期和第2穗抽丝散粉间隔期均随之增加,第1穗抽丝散粉间隔期和植株双穗率则降低;种植密度通过对双穗抽丝间隔期、第1穗抽丝散粉间隔期和第2穗抽丝散粉间隔期间接或直接影响双穗率。除穗行数和第1穗穗长外,种植密度对第1,2果穗产量及其产量构成性状影响显著或极显著。种植密度从30 000株/hm²增加到60 000株/hm²,第1穗果穗产量、总果穗产量、第1穗籽粒产量和总籽粒产量分别增加5 366.10,3 465.98,3 302.85,2 165.60 kg/hm²,第2穗果穗产量和籽粒产量分别降低1 900.12,1 137.25 kg/hm²。种植密度为48 000,54 000,60 000 株/hm²时,总鲜果穗产量和总鲜籽粒产量差异不显著,均极显著高于其余种植密度。综合以上研究结果,新品种万彩糯88适宜种植密度为48 000株/hm²,可初步作为大田种植的推荐密度。

关键词: 糯玉米, 种植密度, 双穗率, 产量, 响应

Abstract:

The aim of this research was to screen the appropriate planting density for double ear type waxy new maize variety Wancainuo 88 and explore the potential to achieve increased yield,field experiment was carried out to study the important plant traits,double ear rate,yield and yield component traits of Wancainuo 88 compared under the different planting densities.The study results showed that as planting density increased,the plant height,ear height,dual fruits silking interval and second ear silkingx-anthesis interval all increased,while the first ear silking-anthesis interval and double ear rate decreased.The planting density indirectly or directly affected to the double ear rate by changing the dual fruits silking interval,first ear silking-anthesis interval and second ear silking-anthesis interval.There were significant or highly significant responses of yield and its component traits for the first ear and second ear to planting density,except for the ear rows and ear length of first ear.With the planting density increased from 30 000 to 60 000 plants/ha,the first fresh ear yield,overall fresh ear yield,first fresh grain yield,overall fresh grain yield were increased 5 366.10,3 465.98,3 302.85,2 165.60 kg/ha,respectively.The second fresh ear yield and fresh ear yield were decreased 1 900.12,1 137.25 kg/ha,respectively.There was not significant for overall fresh ear yield and overall fresh grain yield among the 48 000,54 000,60 000 plants/ha,but extremely significant higher than the other planting density.Based on the above research results,the optimal planting density for new variety Wancainuo 88 was 48 000 plants/ha could be initially used for field planting.

Key words: Waxy maize, Planting density, Double ear rate, Yield, Response

冯云超, 羊炼, 霍仕平, 晏庆九, 张芳魁, 向振凡, 杨果. 双穗型糯玉米新品种万彩糯88对种植密度的响应[J]. 华北农学报, 2022, 37(S1): 103-109. doi: 10.7668/hbnxb.20192683.

FENG Yunchao, YANG Lian, HUO Shiping, YAN Qingjiu, ZHANG Fangkui, XIANG Zhenfan, YANG Guo. Response of Double Ear Type Waxy New Maize Variety Wancainuo 88 to Planting Density[J]. Acta Agriculturae Boreali-Sinica, 2022, 37(S1): 103-109. doi: 10.7668/hbnxb.20192683.

http://www.hbnxb.net/CN/Y2022/V37/IS1/103

图/表 6

参考文献 26

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密度/(株/hm²) Density	株高/cm Plant height	穗位高/cm Ear height	穗位高系数/% Ear height coefficient
30 000	229.33±6.43Ab	87.33±3.53Ab	38.07±0.48Aa
36 000	230.22±6.34Ab	86.44±4.29Ab	37.54±0.94Aa
42 000	233.11±1.54Ab	89.56±0.38Ab	38.42±0.42Aa
48 000	233.11±2.52Ab	90.22±3.08Ab	38.70±1.23Aa
54 000	234.89±6.30Ab	90.44±1.39Ab	38.53±1.41Aa
60 000	244.00±4.81Aa	95.56±2.14Aa	39.17±0.91Aa

密度/(株/hm²) Density	株高/cm Plant height	穗位高/cm Ear height	穗位高系数/% Ear height coefficient
30 000	229.33±6.43Ab	87.33±3.53Ab	38.07±0.48Aa
36 000	230.22±6.34Ab	86.44±4.29Ab	37.54±0.94Aa
42 000	233.11±1.54Ab	89.56±0.38Ab	38.42±0.42Aa
48 000	233.11±2.52Ab	90.22±3.08Ab	38.70±1.23Aa
54 000	234.89±6.30Ab	90.44±1.39Ab	38.53±1.41Aa
60 000	244.00±4.81Aa	95.56±2.14Aa	39.17±0.91Aa

密度/(株/hm²) Density	双穗抽丝间隔期/d Dual fruits silking-interval	第1穗抽丝散粉间隔期/d First ear silking-anthesis interval	第2穗抽丝散粉间隔期/d Second ear silking-anthesis interval	双穗率/% Dual ear rate
30 000	1.76±0.04Bb	1.71±0.40Aa	0.71±0.21Bc	80.00±6.61Aa
36 000	1.86±0.26Bb	1.95±0.36Aa	0.95±0.04Bc	68.75±2.08Bb
42 000	1.60±0.52Bb	1.86±0.26Aa	0.74±0.11Bc	63.69±6.76Bb
48 000	1.88±0.08Bb	1.50±0.21Aa	0.76±0.53Bbc	59.40±3.25Bb
54 000	2.86±0.63Aa	1.64±0.26Aa	1.40±0.58ABb	40.74±8.14Cc
60 000	3.33±0.32Aa	1.26±0.08Aa	2.07±0.31Aa	31.67±2.89Cd

密度/(株/hm²) Density	双穗抽丝间隔期/d Dual fruits silking-interval	第1穗抽丝散粉间隔期/d First ear silking-anthesis interval	第2穗抽丝散粉间隔期/d Second ear silking-anthesis interval	双穗率/% Dual ear rate
30 000	1.76±0.04Bb	1.71±0.40Aa	0.71±0.21Bc	80.00±6.61Aa
36 000	1.86±0.26Bb	1.95±0.36Aa	0.95±0.04Bc	68.75±2.08Bb
42 000	1.60±0.52Bb	1.86±0.26Aa	0.74±0.11Bc	63.69±6.76Bb
48 000	1.88±0.08Bb	1.50±0.21Aa	0.76±0.53Bbc	59.40±3.25Bb
54 000	2.86±0.63Aa	1.64±0.26Aa	1.40±0.58ABb	40.74±8.14Cc
60 000	3.33±0.32Aa	1.26±0.08Aa	2.07±0.31Aa	31.67±2.89Cd

性状 Characters	双穗抽丝间隔期 Dual ear silking interval	第1穗抽丝散粉间隔期 First ear silking-anthesis interval	第2穗抽丝散粉间隔期 Second ear silking-anthesis interval	双穗率 Dual ear rate
密度Density	0.762^**	-0.538^*	0.696^**	-0.943^**
双穗抽丝间隔期		-0.481^*	0.896^**	-0.847^**
Dual ear silking interval
第1穗抽丝散粉间隔期			-0.562^*	0.522^*
First ear silking-anthesis interval
第2穗抽丝散粉间隔期				-0.780^**
Second ear silking-anthesis interval

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