Adaptability and Wind Erosion Resistance of Winter Rapeseed in Semi-arid Area of Central Gansu

doi:10.11924/j.issn.1000-6850.casb2022-0031

Abstract

Abstract:

To explore the adaptability and wind erosion resistance of different varieties of winter rapeseed in semi-arid agricultural areas of central Gansu, six winter rapeseed varieties (winter Brassica rapa ‘HN12PZ16-2’,‘HN12PZ16-65’ and ‘Pingshi 8’, winter Brassica napus ‘QL-GAU-201’, ‘QL-GAU-196’ and ‘Low(1)-19’) were selected as the research objects, and their overwintering rate, wind erosion resistance, yield and oil content were analyzed in detail. The results showed that, the root-shoot ratio of winter Brassica rapa was significantly higher than that of winter Brassica napus before winter, and the overwintering survival rate was also significantly higher than that of winter Brassica napus. The overwintering rate of ‘HN12PZ16-65’ was the highest, reaching 88.33%. The yield and oil content of winter Brassica rapa were significantly higher than those of winter Brassica napus due to high plant height and 1000-grain weight, and the yield (2937.00 kg/hm²) and oil content (43.67%) of ‘HN12PZ16-65’ were the highest. The dry matter accumulation of winter rapeseed was high before winter, which increased the starting wind speed of farmland and significantly reduced the wind erosion of farmland. The wind erosion of farmland soil of the six winter rapeseed varieties decreased by 88.77%-92.79% compared with that of the open field. Therefore, ‘HN12PZ16-65’ has strong drought resistance, high overwintering rate, high yield and oil content, good adaptability and good wind erosion resistance in central Gansu, which is suitable for wind erosion wintering cultivation in semi-arid agricultural areas.

Key words: winter rapeseed, adaptability, wind erosion resistance, overwintering rate, oil content

CLC Number:

S565.4，S332.5

KANG Yunqiang, LI Lingling, XIE Junhong, ZHANG Jian, DU Changliang, ZECHARIAH Effah. Adaptability and Wind Erosion Resistance of Winter Rapeseed in Semi-arid Area of Central Gansu[J]. Chinese Agricultural Science Bulletin, 2023, 39(1): 31-36.

Figures/Tables 7

References 32

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冬油菜品种	调查日期(月-日)	干物质积累
		叶			根			根冠比
		鲜重/g	干重/g	鲜重/干重	鲜重/g	干重/g	鲜重/干重	根冠比
HN12PZ16-2	12-12	7.25b	3.79b	1.91a	26.05ab	6.21bc	4.19ab	1.64a
HN12PZ16-65	12-12	8.66b	4.83b	1.79a	32.06ab	6.34ab	5.06a	1.31a
平试8	12-12	15.60a	8.30a	1.88a	42.15a	9.47a	4.45ab	1.14a
QL-GAU-201	12-12	10.69ab	5.44ab	1.97a	12.11b	2.81c	4.31ab	0.52b
QL-GAU-196	12-12	12.12ab	6.13ab	1.98a	14.56b	3.69c	3.95b	0.60b
低(1)-19	12-12	16.55a	8.16a	2.03a	11.93b	2.65c	4.50ab	0.32b

冬油菜品种	调查日期(月-日)	干物质积累
		叶			根			根冠比
		鲜重/g	干重/g	鲜重/干重	鲜重/g	干重/g	鲜重/干重	根冠比
HN12PZ16-2	12-12	7.25b	3.79b	1.91a	26.05ab	6.21bc	4.19ab	1.64a
HN12PZ16-65	12-12	8.66b	4.83b	1.79a	32.06ab	6.34ab	5.06a	1.31a
平试8	12-12	15.60a	8.30a	1.88a	42.15a	9.47a	4.45ab	1.14a
QL-GAU-201	12-12	10.69ab	5.44ab	1.97a	12.11b	2.81c	4.31ab	0.52b
QL-GAU-196	12-12	12.12ab	6.13ab	1.98a	14.56b	3.69c	3.95b	0.60b
低(1)-19	12-12	16.55a	8.16a	2.03a	11.93b	2.65c	4.50ab	0.32b

农艺形状	HN12PZ16-2	HN12PZ16-65	平试8
株高/cm	110.64b	131.38a	105.76b
主花序长度/cm	44.28a	48.13a	37.14a
分枝部位/cm	6.54b	9.80a	4.32b
一次分枝数	11.60a	10.75a	10.80a
二次分枝数	20.20a	14.25a	14.80a
主序角果数	33.60a	37.25a	28.00a
角粒数/粒	195.80a	220.00a	203.00a
全株有效结角数/个	280.40a	232.25a	263.2a
千粒重/g	2.57a	2.78a	2.54a

农艺形状	HN12PZ16-2	HN12PZ16-65	平试8
株高/cm	110.64b	131.38a	105.76b
主花序长度/cm	44.28a	48.13a	37.14a
分枝部位/cm	6.54b	9.80a	4.32b
一次分枝数	11.60a	10.75a	10.80a
二次分枝数	20.20a	14.25a	14.80a
主序角果数	33.60a	37.25a	28.00a
角粒数/粒	195.80a	220.00a	203.00a
全株有效结角数/个	280.40a	232.25a	263.2a
千粒重/g	2.57a	2.78a	2.54a