Growth of Black Poplar Varieties in Cuttage Afforestation Without Roots and Afforestation With Roots in Jianghan Plain: Comparison Analysis

doi:10.11924/j.issn.1000-6850.casb2022-0466

Abstract

Abstract:

In order to analyze the growth of different poplar varieties in cuttage afforestation without roots and afforestation with roots in the Jianghan Plain, 4 black poplar varieties were used as test materials to compare the root development characteristics of annual seedlings and the growth amount of the following five years. The results showed that the average rooting interval length, average total root number and total root weight of the 4 varieties in cuttage afforestation without roots were significantly greater than those of the corresponding varieties in afforestation with roots, and the difference of the average length of single root of the two afforestation methods was not significant. The total root weight and rooting interval length of annual seedlings were highly correlated with the growth amount of diameter breast height (DBH) and plant height of annual seedlings, and the growth of annual seedlings in cuttage afforestation without roots was significantly better than that in afforestation with roots. The comparison of the 4 varieties with two afforestation methods during five consecutive years showed that, among different varieties, there were highly significant differences of the total growth amount and the annual net growth amount of DBH and plant height, and the total growth amount of DBH and plant height of the 4 varieties during the five consecutive years in cuttage afforestation without roots were greater than those of the corresponding varieties in forestation with roots. Between the two afforestation methods, there were also significant or highly significant differences in the total growth amount and the annual net growth amount of DBH and plant height for the 5 consecutive years. In the first three years of afforestation, the net growth amount of DBH and plant height of each variety in cuttage afforestation without roots were greater than those in afforestation with roots, but with the increasing age of stand, the difference of growth amount between the two afforestation methods showed a decreasing trend year by year.

Key words: black poplar variety, cuttage afforestation without roots, afforestation with roots, Jianghan Plain

ZHANG Yadong, LONG Kailian, HUANG Guowei, FAN Xiaoping, ZHANG Xinye. Growth of Black Poplar Varieties in Cuttage Afforestation Without Roots and Afforestation With Roots in Jianghan Plain: Comparison Analysis[J]. Chinese Agricultural Science Bulletin, 2023, 39(17): 1-8.

Figures/Tables 6

References 13

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性状	时间	带根造林					插干造林
性状	时间	丹红杨	华石2号	楚林2号	2025杨	平均	丹红杨	华石2号	楚林2号	2025杨	平均
总根数/条	4月	11.33	12.5	12.33	10.5	11.67	12.5	15.33	15.67	12.5	14
	5月	42.5	37.67	28	32.33	35.13	56.33	68.5	59.5	54.33	59.67
	6月	65.33	51.5	49.5	38.5	51.21	86.5	108.5	96.33	78.33	92.42
	7月	98.33	83.67	75.5	56.67	78.54	106.5	125.67	116.67	101.5	112.59
	10月	115.67	105.33	96.67	76.33	98.5	133.33	144.33	141.5	122.67	135.46
	12月	145.5	127.5	113.5	85.5	118	145.67	160.5	154.5	142.33	150.75
单根均长/cm	4月	13.34	12.92	9.3	9.85	11.35	10.87	7.63	8.81	10.42	9.43
	5月	22.11	21.36	19.56	23.49	21.63	18.01	18.43	19.05	15.61	17.78
	6月	26.46	28.77	29.12	32.51	29.22	27.63	29.58	28.73	22.79	27.18
	7月	42.49	54.57	45.73	45.37	47.04	41.13	42.27	45.33	38.11	41.71
	10月	58.97	69.21	52.18	51.56	57.98	61.86	67.69	62.15	45.66	59.34
	12月	72.08	81.35	70.45	63.4	71.82	75.42	79.17	74.56	54.22	70.84
总根重量/g	4月	6.83	5.45	6.03	5.15	5.87	4.48	4.86	5.06	4.17	4.64
	5月	22.89	15.72	16.75	11.53	16.72	22.63	28.29	26.59	15.25	23.19
	6月	43.5	55.6	50.25	53.6	50.74	52.1	59.1	57.96	38.7	51.97
	7月	188.8	225.3	214.16	170.55	199.7	230.4	248.7	238.6	203.45	230.29
	10月	924.2	1062.45	1146.25	796.15	982.26	1261.5	1306.4	1342.16	943.33	1213.35
	12月	1530.7	1811.33	1642.36	1317.6	1575.5	2562.6	2919.45	2845.78	2113.92	2610.44
生根区间长度/cm	4月	15.35	18.53	15.05	15.78	16.18	32.15	35.22	32.75	30.66	32.7
	5月	39.52	44.36	38.25	41.36	40.87	56.45	57.45	54.65	57.28	56.46
	6月	40.55	44.82	40.45	38.75	41.14	66.28	63.86	66.21	71.22	66.89
	7月	42.12	43.58	41.26	39.62	41.65	68.66	72.32	68.15	68.89	69.51
	10月	43.15	42.42	42.68	40.56	42.2	67.16	70.45	67.45	71.25	69.08
	12月	42.52	43.37	41.73	39.85	41.87	68.53	71.21	69.48	70.43	69.91

性状	时间	带根造林					插干造林
性状	时间	丹红杨	华石2号	楚林2号	2025杨	平均	丹红杨	华石2号	楚林2号	2025杨	平均
总根数/条	4月	11.33	12.5	12.33	10.5	11.67	12.5	15.33	15.67	12.5	14
	5月	42.5	37.67	28	32.33	35.13	56.33	68.5	59.5	54.33	59.67
	6月	65.33	51.5	49.5	38.5	51.21	86.5	108.5	96.33	78.33	92.42
	7月	98.33	83.67	75.5	56.67	78.54	106.5	125.67	116.67	101.5	112.59
	10月	115.67	105.33	96.67	76.33	98.5	133.33	144.33	141.5	122.67	135.46
	12月	145.5	127.5	113.5	85.5	118	145.67	160.5	154.5	142.33	150.75
单根均长/cm	4月	13.34	12.92	9.3	9.85	11.35	10.87	7.63	8.81	10.42	9.43
	5月	22.11	21.36	19.56	23.49	21.63	18.01	18.43	19.05	15.61	17.78
	6月	26.46	28.77	29.12	32.51	29.22	27.63	29.58	28.73	22.79	27.18
	7月	42.49	54.57	45.73	45.37	47.04	41.13	42.27	45.33	38.11	41.71
	10月	58.97	69.21	52.18	51.56	57.98	61.86	67.69	62.15	45.66	59.34
	12月	72.08	81.35	70.45	63.4	71.82	75.42	79.17	74.56	54.22	70.84
总根重量/g	4月	6.83	5.45	6.03	5.15	5.87	4.48	4.86	5.06	4.17	4.64
	5月	22.89	15.72	16.75	11.53	16.72	22.63	28.29	26.59	15.25	23.19
	6月	43.5	55.6	50.25	53.6	50.74	52.1	59.1	57.96	38.7	51.97
	7月	188.8	225.3	214.16	170.55	199.7	230.4	248.7	238.6	203.45	230.29
	10月	924.2	1062.45	1146.25	796.15	982.26	1261.5	1306.4	1342.16	943.33	1213.35
	12月	1530.7	1811.33	1642.36	1317.6	1575.5	2562.6	2919.45	2845.78	2113.92	2610.44
生根区间长度/cm	4月	15.35	18.53	15.05	15.78	16.18	32.15	35.22	32.75	30.66	32.7
	5月	39.52	44.36	38.25	41.36	40.87	56.45	57.45	54.65	57.28	56.46
	6月	40.55	44.82	40.45	38.75	41.14	66.28	63.86	66.21	71.22	66.89
	7月	42.12	43.58	41.26	39.62	41.65	68.66	72.32	68.15	68.89	69.51
	10月	43.15	42.42	42.68	40.56	42.2	67.16	70.45	67.45	71.25	69.08
	12月	42.52	43.37	41.73	39.85	41.87	68.53	71.21	69.48	70.43	69.91

造林方式	品种	胸径均值/cm	树高均值/m
插干	华石2号	5.91±0.22a	6.38±0.17a
	丹红杨	5.85±0.23a	6.15±0.35ab
	楚林2号	5.53±0.15b	5.95±0.24b
	2025杨	4.68±0.17c	5.53±0.33c
带根	华石2号	4.35±0.29d	5.45±0.33cd
	楚林2号	4.18±0.19d	5.25±0.21d
	丹红杨	4.13±0.25d	5.08±0.43d
	2025杨	3.88±0.23e	4.58±0.27e

造林方式	品种	胸径均值/cm	树高均值/m
插干	华石2号	5.91±0.22a	6.38±0.17a
	丹红杨	5.85±0.23a	6.15±0.35ab
	楚林2号	5.53±0.15b	5.95±0.24b
	2025杨	4.68±0.17c	5.53±0.33c
带根	华石2号	4.35±0.29d	5.45±0.33cd
	楚林2号	4.18±0.19d	5.25±0.21d
	丹红杨	4.13±0.25d	5.08±0.43d
	2025杨	3.88±0.23e	4.58±0.27e

性状		平方和	df	均方	F	显著性
胸径	组间	19.030	7	2.719	131.145	0.000
	组内	0.498	24	0.021
	总数	19.527	31
树高	组间	9.909	7	1.416	53.925	0.000
	组内	0.630	24	0.026
	总数	10.539	31