| Adaptability and utilization of cabbage-type winter rapeseed in the cold-arid regions |
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| DOI：10.7606/j.issn.1000-7601.2018.06.09 |
| Key Words: cabbage-type winter rapeseed overwintering rate multiple cropping benefit sowing time cold-arid regions of Gansu Province |
| Author Name | Affiliation | | LIU Qin | To better understand the adaptability of winter rapeseed in cold-arid region of Zhangye, Gansu Province, the overwintering rate, dry matter accumulation prior to winter, agronomic characters, and yield of 8 Brassica napus varieties were analyzed and compared, the effects of different sowing time on overwintering rate and yield were studied, and also the successive cropping modes of winter rapeseed were investigated. The results showed that at the 38° north latitude, the extreme minimum temperature is -28.7℃ in the Zhangye and Hexi corridor, the Chinese cabbage-type winter rapeseed can overwinter and produce high yield and quality seeds. After harvesting winter rapeseed, planting various crops such as early maturing soybeans, potatoes, oil sunflower, and vegetables in the output value per 666.7 m2 is 32.0%~154.4% higher than that of single wheat, and 15.4%~108.6% higher than that of single maize, and the economic benefit is very significant. The winter rapeseed production in Zhangye and Hexi corridor could reform the traditional agriculture from 1 harvest per year to two harvests per year or 3 harvests per two years. As a result, it will increase cropping index, improve land resource utilization, and economic benefits. At the same time, it can increase soil vegetation coverage in winter and spring to reduce dust source and improve ecological environment. In conclusion, it’s appropriate to choose cold resistance varieties in Zhangye and Hexi corridor, and early sowing in the middle of August is advisable. | | YAO Zheng-liang | To better understand the adaptability of winter rapeseed in cold-arid region of Zhangye, Gansu Province, the overwintering rate, dry matter accumulation prior to winter, agronomic characters, and yield of 8 Brassica napus varieties were analyzed and compared, the effects of different sowing time on overwintering rate and yield were studied, and also the successive cropping modes of winter rapeseed were investigated. The results showed that at the 38° north latitude, the extreme minimum temperature is -28.7℃ in the Zhangye and Hexi corridor, the Chinese cabbage-type winter rapeseed can overwinter and produce high yield and quality seeds. After harvesting winter rapeseed, planting various crops such as early maturing soybeans, potatoes, oil sunflower, and vegetables in the output value per 666.7 m2 is 32.0%~154.4% higher than that of single wheat, and 15.4%~108.6% higher than that of single maize, and the economic benefit is very significant. The winter rapeseed production in Zhangye and Hexi corridor could reform the traditional agriculture from 1 harvest per year to two harvests per year or 3 harvests per two years. As a result, it will increase cropping index, improve land resource utilization, and economic benefits. At the same time, it can increase soil vegetation coverage in winter and spring to reduce dust source and improve ecological environment. In conclusion, it’s appropriate to choose cold resistance varieties in Zhangye and Hexi corridor, and early sowing in the middle of August is advisable. | | MIAO Chun-qing | To better understand the adaptability of winter rapeseed in cold-arid region of Zhangye, Gansu Province, the overwintering rate, dry matter accumulation prior to winter, agronomic characters, and yield of 8 Brassica napus varieties were analyzed and compared, the effects of different sowing time on overwintering rate and yield were studied, and also the successive cropping modes of winter rapeseed were investigated. The results showed that at the 38° north latitude, the extreme minimum temperature is -28.7℃ in the Zhangye and Hexi corridor, the Chinese cabbage-type winter rapeseed can overwinter and produce high yield and quality seeds. After harvesting winter rapeseed, planting various crops such as early maturing soybeans, potatoes, oil sunflower, and vegetables in the output value per 666.7 m2 is 32.0%~154.4% higher than that of single wheat, and 15.4%~108.6% higher than that of single maize, and the economic benefit is very significant. The winter rapeseed production in Zhangye and Hexi corridor could reform the traditional agriculture from 1 harvest per year to two harvests per year or 3 harvests per two years. As a result, it will increase cropping index, improve land resource utilization, and economic benefits. At the same time, it can increase soil vegetation coverage in winter and spring to reduce dust source and improve ecological environment. In conclusion, it’s appropriate to choose cold resistance varieties in Zhangye and Hexi corridor, and early sowing in the middle of August is advisable. | | YAO Yao | To better understand the adaptability of winter rapeseed in cold-arid region of Zhangye, Gansu Province, the overwintering rate, dry matter accumulation prior to winter, agronomic characters, and yield of 8 Brassica napus varieties were analyzed and compared, the effects of different sowing time on overwintering rate and yield were studied, and also the successive cropping modes of winter rapeseed were investigated. The results showed that at the 38° north latitude, the extreme minimum temperature is -28.7℃ in the Zhangye and Hexi corridor, the Chinese cabbage-type winter rapeseed can overwinter and produce high yield and quality seeds. After harvesting winter rapeseed, planting various crops such as early maturing soybeans, potatoes, oil sunflower, and vegetables in the output value per 666.7 m2 is 32.0%~154.4% higher than that of single wheat, and 15.4%~108.6% higher than that of single maize, and the economic benefit is very significant. The winter rapeseed production in Zhangye and Hexi corridor could reform the traditional agriculture from 1 harvest per year to two harvests per year or 3 harvests per two years. As a result, it will increase cropping index, improve land resource utilization, and economic benefits. At the same time, it can increase soil vegetation coverage in winter and spring to reduce dust source and improve ecological environment. In conclusion, it’s appropriate to choose cold resistance varieties in Zhangye and Hexi corridor, and early sowing in the middle of August is advisable. | | MAO Cheng-zhi | To better understand the adaptability of winter rapeseed in cold-arid region of Zhangye, Gansu Province, the overwintering rate, dry matter accumulation prior to winter, agronomic characters, and yield of 8 Brassica napus varieties were analyzed and compared, the effects of different sowing time on overwintering rate and yield were studied, and also the successive cropping modes of winter rapeseed were investigated. The results showed that at the 38° north latitude, the extreme minimum temperature is -28.7℃ in the Zhangye and Hexi corridor, the Chinese cabbage-type winter rapeseed can overwinter and produce high yield and quality seeds. After harvesting winter rapeseed, planting various crops such as early maturing soybeans, potatoes, oil sunflower, and vegetables in the output value per 666.7 m2 is 32.0%~154.4% higher than that of single wheat, and 15.4%~108.6% higher than that of single maize, and the economic benefit is very significant. The winter rapeseed production in Zhangye and Hexi corridor could reform the traditional agriculture from 1 harvest per year to two harvests per year or 3 harvests per two years. As a result, it will increase cropping index, improve land resource utilization, and economic benefits. At the same time, it can increase soil vegetation coverage in winter and spring to reduce dust source and improve ecological environment. In conclusion, it’s appropriate to choose cold resistance varieties in Zhangye and Hexi corridor, and early sowing in the middle of August is advisable. | | SUN Wan-cang | To better understand the adaptability of winter rapeseed in cold-arid region of Zhangye, Gansu Province, the overwintering rate, dry matter accumulation prior to winter, agronomic characters, and yield of 8 Brassica napus varieties were analyzed and compared, the effects of different sowing time on overwintering rate and yield were studied, and also the successive cropping modes of winter rapeseed were investigated. The results showed that at the 38° north latitude, the extreme minimum temperature is -28.7℃ in the Zhangye and Hexi corridor, the Chinese cabbage-type winter rapeseed can overwinter and produce high yield and quality seeds. After harvesting winter rapeseed, planting various crops such as early maturing soybeans, potatoes, oil sunflower, and vegetables in the output value per 666.7 m2 is 32.0%~154.4% higher than that of single wheat, and 15.4%~108.6% higher than that of single maize, and the economic benefit is very significant. The winter rapeseed production in Zhangye and Hexi corridor could reform the traditional agriculture from 1 harvest per year to two harvests per year or 3 harvests per two years. As a result, it will increase cropping index, improve land resource utilization, and economic benefits. At the same time, it can increase soil vegetation coverage in winter and spring to reduce dust source and improve ecological environment. In conclusion, it’s appropriate to choose cold resistance varieties in Zhangye and Hexi corridor, and early sowing in the middle of August is advisable. |
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| Abstract: |
| To better understand the adaptability of winter rapeseed in cold-arid region of Zhangye, Gansu Province, the overwintering rate, dry matter accumulation prior to winter, agronomic characters, and yield of 8 Brassica napus varieties were analyzed and compared, the effects of different sowing time on overwintering rate and yield were studied, and also the successive cropping modes of winter rapeseed were investigated. The results showed that at the 38° north latitude, the extreme minimum temperature is -28.7℃ in the Zhangye and Hexi corridor, the Chinese cabbage-type winter rapeseed can overwinter and produce high yield and quality seeds. After harvesting winter rapeseed, planting various crops such as early maturing soybeans, potatoes, oil sunflower, and vegetables in the output value per 666.7 m2 is 32.0%~154.4% higher than that of single wheat, and 15.4%~108.6% higher than that of single maize, and the economic benefit is very significant. The winter rapeseed production in Zhangye and Hexi corridor could reform the traditional agriculture from 1 harvest per year to two harvests per year or 3 harvests per two years. As a result, it will increase cropping index, improve land resource utilization, and economic benefits. At the same time, it can increase soil vegetation coverage in winter and spring to reduce dust source and improve ecological environment. In conclusion, it’s appropriate to choose cold resistance varieties in Zhangye and Hexi corridor, and early sowing in the middle of August is advisable. |
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