摘要
本文对已垦沼泽地重茬大豆的缓解措施进行研究,结果表明:处理间差异显著(F=28.41>F0.05=3.33),各处理以重茬药肥加钾肥对重茬大豆的缓解作用明显,比重茬对照增产16.7%,比正茬增产2.39%。其他处理比重茬对照均有增产,幅度为4.9~13.5%,与正茬比均减产。幅度-1.33~-7.97%。钾肥与重茬药肥两处理量较接近正茬。对根腐病的防效以药肥加钾肥的效果最佳。
The cushion measures of soybean to Continuous Cropping condition on tilled swamp land were studied. The results showed that the difference between treatments was significant (F =28. 4l>Fo.o5=3. 33). The treatment, in which medicine, fertilizer and potassium fertilizer were used together , had the best effect. The yield of it was 16. 7% more than that of continuous soybean without treatment (ck ) and 2. 39% more than that of soybean in normal rotation. The yield of Other treatments were 4. 9~ 12. 5% more than that of continuous soybean without treat- ment and 1.33~7. 97% less than that of soybean in normal rotation. The yields of potassium fertilizer treatment and midicine-fertilizer treatment were near to the yield of normal rotation.
出处
《黑龙江农业科学》
1997年第3期12-14,共3页
Heilongjiang Agricultural Sciences
关键词
大豆
已垦沼泽地
重茬
缓解措施
Soybean , Tilled Swamp land , Continuous-cropping soybean , Cushion measures.