Abstract:
In order to provide a feasible theoretical guidance for local high-efficiency crop cultivation pattern, we conducted an experiment with two cropping annually, in the western part of Jilin Province-Changling county and Tongyu county, to explore the crop yields and economic benefits of
Triticum aestivum,
Avena sativa,
Brassica pekinensis, and
Brassica juncea in semi-arid areas.We used
Zea mays monoculture as a control, and designed 3 treatments of the two-crops planting annually including
Triticum aestivum/
Brassica pekinensis,
Triticum aestivum/
Brassica juncea and
Avena sativa/
Brassica juncea.We planted Qianqing
Triticum aestivum, Xiaobing
Triticum aestivum, Australian
Triticum aestivum and
Avena sativa as the preceding crops, and
Brassica pekinensis,
Canola hyola Sinapis and
Canola hyola Brassica as the subsequent crops.The results showed that the total growth period of the annual two-cropping planting patterns was 25~49 days longer than that of the
Zea mays monoculture, and the total production value increased by 42.4%~94.0%.The production value of
Avena sativa/
Canola hyola Sinapis and
Avena sativa/
Canola hyola Brassica planting patterns was 51 092 yuan·hm
-2 and 50 042 yuan·hm
-2, and 1.94 times and 1.90 times higher than
Zea mays monoculture, respectively.The optimal planting density of
Avena sativa was 245 plant·m
-2, and the optimal irrigation rate for
Brassica juncea was 4.52×10
4 mm·hm
-2.The
Avena sativa/
Brassica juncea would be the best planting pattern in the semi-arid areas of western Jilin Province of China.