干旱区生态环境知识资源中心(Arid): 北方寒旱区白菜型冬油菜安全越冬的临界指标分析

Arid

	北方寒旱区白菜型冬油菜安全越冬的临界指标分析
其他题名	Critical Index Analysis of Safe Over-wintering Rate of Winter Rapeseed (Brassica rapa) in Cold and Arid Region in North China
	孙万仓 1; 刘海卿 1; 刘自刚 1; 武军艳 1; 李学才 1; 方彦 1; 曾秀存 2; 许耀照 2; 张亚宏 3; 董云 4
来源期刊	作物学报
ISSN	0496-3490
出版年	2016
卷号	42 期号:4 页码:609-618
中文摘要	利用20112014年北方13个省、市、区48个不同生态点的试验数据, 分析不同品种在不同生态点的越冬率、产量变化, 越冬率与产量的相关性, 旨在研究白菜型冬油菜在北方不同生态区的越冬安全性, 确定北方冬油菜通用的安全越冬的越冬率临界值, 明确影响北方冬油菜越冬率的主要因子。结果表明, 不同白菜型冬油菜品种在北方不同生态地区越冬率差异较大, 产量也差异较大, 越冬率变幅为10%~99%, 强抗寒品种越冬率>70%。回归分析表明, 越冬率与产量存在明显的线性正相关, 回归方程符合y = ax+b, 当越冬率<70%时, 产量随越冬率的增加而增加, 当越冬率为70%时单位面积产量基本趋于稳定, 越冬率大于70%时, 越冬率对产量的影响不明显。协方差分析表明, 与冬油菜越冬率相关性最为密切的因子是品种, 其次是极端最低气温、冬季气温、年均气温、≤0℃的冬季负积温、纬度、经度等。因此,70%的越冬率可作为北方地区冬油菜通用安全越冬的越冬率临界值, 采用强抗寒品种, 极端最低气温-31.79℃、冬季气温-7.20℃、年均气温6.38℃、负积温-997.57℃, 纬度低于44.83°, 经度高于80.34°是保证冬油菜安全越冬的必要条件。
英文摘要	To research the safe over-wintering rate of winter rapeseed (Brassica rapa) in different ecological areas in North China, to confirm the critical value of over-wintering rate, and to clarify the main factors affecting over-wintering rate, we collected the data of long term multi-location field experiments at 48 ecological sites in 13 provinces and cities and areas in 2011-2014 with winter rapeseed variety Longyou 7, Longyou 6, Longyou 8, Longyou 9, Tianyou 4, Tianyou 2 to analyze the over-wintering rate and yield and the correlations between them. The results indicated that there were significant differences of over-wintering rate in different ecological areas, which ranged from 10% to 99% and the yield also had significant difference in different locations. The over-wintering rates of varieties with strong cold resistance were over 70%. Regression analysis showed a significant linear correlation between over-wintering rate and yield, with the regression equation of y = ax+b. The yield increased with the increase of over-wintering rate when the over-wintering rate < 70%, and tended to stable when the over-wintering rate was 70%, but didnt had significant influence on yield when > 70%. In conclusion, variety is one of the key factors affecting the over-wintering rate of winter rapeseed. The critical value of safe over-wintering rate in north China is 70%, and the corresponding planting conditions are the strong cold resistant varieties, the extreme lowest temperature -31.79℃, the temperature of winter -7.20℃, annual average temperature 6.38℃, negative cumulative temperatures in winter -997.57℃ in planting areas, latitude below 44.83° and longitude over 80.34°.
中文关键词	白菜型 ; 冬油菜 ; 北方寒旱区 ; 越冬率 ; 影响因子 ; 回归分析
英文关键词	Brassica rapa. Winter rapeseed Cold and arid region in the north of China Over-wintering rate Affecting factor Regression analysis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5677224
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235593
作者单位	1.甘肃农业大学农学院, 甘肃省油菜工程与技术研究中心;;甘肃省作物遗传改良与种质创新重点实验室;;甘肃省干旱生境作物重点实验室, 兰州, 甘肃 730070, 中国; 2.河西学院农业与生物技术学院, 张掖, 甘肃 734000, 中国; 3.天水农业科学研究所, 天水, 甘肃 741000, 中国; 4.甘肃省农业科学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	孙万仓,刘海卿,刘自刚,等. 北方寒旱区白菜型冬油菜安全越冬的临界指标分析[J]. 甘肃农业大学,2016,42(4):609-618.
APA	孙万仓.,刘海卿.,刘自刚.,武军艳.,李学才.,...&董云.(2016).北方寒旱区白菜型冬油菜安全越冬的临界指标分析.作物学报,42(4),609-618.
MLA	孙万仓,et al."北方寒旱区白菜型冬油菜安全越冬的临界指标分析".作物学报 42.4(2016):609-618.