STUDY ON THE INFLUENCE OF SUCCESSIVE AND ALTERNATECROPPING ON SOYBEAN YIELD AND QUALITY(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Title:: STUDY ON THE INFLUENCE OF SUCCESSIVE AND ALTERNATECROPPING ON SOYBEAN YIELD AND QUALITY

Author(s):: Liu Zhongtang　Yu Lo ng sheng; The National Center of Soybean Enginnering Technology , Harbin 150086

Abstract:: The study wa s conducted at nine fixed rotatio n plo ts in five eco logic regio ns.The purpo se i s to study the influence o f soybea n alterna te, tw o, three and four y earssuccessiv e cropping on soy bean grow th, leaf area index , dry ma t ter accumula tion, yieldcha racters yield a nd pod quality. The resul ts o f three years show h that the soy bean yieldo f successiv e a nd al terna te cro pping decreased in comparso n w ith that o f normal o n mo recropping. The more the y ears of successive and al terna te cro pping the mo re the so ybeanyield reductio n. Yield reductio n of al ternate, tow , three and fo ur years successiv ecropping are sepera tely 6. 1, 9. 9, 13. 8 and 19% less than normal rotatio n. The yieldreductio n of al terna te cro pping is the least among them. The lev el of yield reduction isva rio us in dif ferent ecologic regio ns. The inf lunce t rend of successiv e and alterna tecropping to so ybean g row th, dry mat ter accumula tion, yield characters is the same asthose to yield. Successiv e and al terna te cropping hav e a sig nificant effect o n so ybeancommodi ty quali ty , such as, low er 100- seed w eight , higher percent di sease seeds anddamaged seeds by insects, which cause commodity quali ty of soybea n to become low er.The o bvious influence o f successiv e and alternate cro pping o n chemical quality had notbeen found in thi s study.

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Last Update: 2016-12-27