Effects of Soda Saline-Alkali Stress on the Growth and Development of Hemp

doi:10.11924/j.issn.1000-6850.casb2022-0373

Abstract

Abstract:

To clarify the growth and development characteristics of hemp under soda saline-alkali stress, two introduced hemp varieties, ‘Geliexiya’ (V1) and ‘Jindao 15’ (V2), were used to study the changes of seedling emergence rate, plant height, leaf area index, dry matter weight and bast yield of hemp under different soda saline-alkali stress in different growth stages. The results showed that different soda saline-alkali stress in different growth stages had no significant effect on seedling emergence rate, but had a great impact on plant height, stem diameter, leaf area index, leaf dry weight, stem dry weight, root dry weight and hemp bast yield. There was a significant difference between severe and moderate soda saline-alkali stress treatments and the control, in which hemp bast yield decreased by 12.43%-35.27% compared with that of CK. On the whole, different soda saline-alkali stress in different growth stages could inhibit the growth and development of hemp. The inhibition degree in seedling stage is higher than that in other growth stages, and the ability of V1 to withstand soda saline-alkali stress is greater than that of V2.

Key words: hemp, soda saline-alkali stress, growth, development, yield

ZHANG Xiaoyan, BIAN Jing, ZHAO Yue, WANG Xiaonan, SUN Yufeng. Effects of Soda Saline-Alkali Stress on the Growth and Development of Hemp[J]. Chinese Agricultural Science Bulletin, 2023, 39(13): 1-7.

Figures/Tables 10

References 31

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处理	pH	含盐量/%	CO₃^2-/(mg/kg)	HCO₃^-/(mg/kg)	SO₄^2-/(mg/kg)	Na⁺/(mg/kg)	K⁺/(mg/kg)	Ca²⁺/(mg/kg)
CK	7.41	0.03	5.42	264.78	11.84	48.72	13.98	68.41
LS	7.89	0.12	23.45	832.45	24.15	369.87	29.84	54.32
MS	8.91	0.16	46.73	1823.78	34.67	411.46	49.76	43.28
SS	9.44	0.43	289.87	2643.84	40.37	897.87	132.38	15.74

处理	pH	含盐量/%	CO₃^2-/(mg/kg)	HCO₃^-/(mg/kg)	SO₄^2-/(mg/kg)	Na⁺/(mg/kg)	K⁺/(mg/kg)	Ca²⁺/(mg/kg)
CK	7.41	0.03	5.42	264.78	11.84	48.72	13.98	68.41
LS	7.89	0.12	23.45	832.45	24.15	369.87	29.84	54.32
MS	8.91	0.16	46.73	1823.78	34.67	411.46	49.76	43.28
SS	9.44	0.43	289.87	2643.84	40.37	897.87	132.38	15.74