2006•Heilongjiang nongye kexueRequires access
Effects of Different Crop Stubbles on Grain Yield and Agronomic Characters of Soybean Continuous Cropping
Xue Qing-xi, Huan Li-hai
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Abstract
The effects of different crop stubbles on grain yield and agronomic characters of soybean continuous cropping was studied in the Longzhen Farm of Farm Bureau Directly Under Shenyang Military Area in 2004.The results showed that the soybean grain yield of soybean continuous cropping for 2 years in alfalfa stubble,that for 2 years in maize stubble and that for 2 years in soybean stubble were 2 359.5,2 247.0 and 2 052.0 kg/hm~2,respectively.The grain yield of soybean continuous cropping for 2 years in alfalfa stubble was more than 112.5 kg/ hm~2,an insignificant increase of 5% than that of soybean continuous cropping for 2 years in maize stubble,and more than 307.5 kg/hm~2,a significant increase of 14.99% than that of soybean continuous cropping for 2 years in soybean stubble.The grain yields of soybean continuous cropping for 2 years in maize stubble was more than 195.0 kg/hm~2,an insignificant increase of 9.5% than that of soybean continuous cropping for 2 years in soybean stubble.