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STUDY ON THE REASONS OF REDUCING GRAIN YIELD IN SOYBEANPLANTED CONTINUOUSLY AND THE WAYS TO GET MORE OUTPUT Ⅳ.Soil Natrition and Absorbabiluty in Continuous and EveryOther One Year Copping Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2003年02期
Page:
120-126
Research Field:
Publishing date:

Info

Title:
STUDY ON THE REASONS OF REDUCING GRAIN YIELD IN SOYBEANPLANTED CONTINUOUSLY AND THE WAYS TO GET MORE OUTPUT Ⅳ.Soil Natrition and Absorbabiluty in Continuous and EveryOther One Year Copping Soybean
Author(s):
He Zhihong1Liu Zhong tang2Xu Yanli3Han Xiaozeng3Xu Yong hua4
1 .Science and Technology Department of Heilongjiang Province , Harbin , 150001 ;
2 .National Research Center of Soybean Engineering and Techniques of China , 150086 ;
3 .The Northeast Ecological Inst itute of Geography and Agriculture , CAS , 150040 ;
4.Soybean Research Insti tute , Hei longj iang Academy of Agricultural Sciences , 150086
Keywords:
Soybean ; Continuously and alternately planting ; Soil nut rition ; Ability of absorb
PACS:
S 565.1 S 606
DOI:
10.11861/j.issn.1000-9841.2003.02.0120
Abstract:
The experiment s on continuous and every other one year cropping soybean in 5 ecological regions ofHeilong jiang Province had been carried out fo r 8 years since 1993 .In the same time , the investigation w as madein soybean fields.The result show ed that :according to theo retics , soil of nut rit ion in cont inuous and every o therone year cropping soybean would be ex pended unilaterally .But , in the practice of product ion , there w as not unilateralex pending sig nificantly w hen soybeans were planted continuously and alternatively .It w as not only forN , P and K , but also for B , Mo , Mn , Zn , etc .The amount of element and microelement took f rom soil wasnot sig nificant dif ferent among rotation pat terns .In po tting ex pariment w ithout fert ilizer , mare main nut ritionalelement s w ere expended in continuos cropping soybean maize and wheat than that in normal rotation.Amongthem , the amount of w hole phosphorus and quick acting potassium , expended in continuous -alternate soybeans, w as more than that in co ntinuous -alternate corn and w heat .The abili ty to absorb nutrition w as changed , w hen soybeans w ere planted continuously and alternately .Theability to absorb most elements , especially , to absorb ni trogen , phosphorus and potassium w as reduced .But theability to absorb calcium , magnesium , iron etc nas increesed .To apply potassium could increase the output ofsoybeans in continuous and every ther one year cropping soy nean .All of those abovementioned show ed i t w as an impo rtant reason to reduce output of continuous -alternatesoybeans the amount of soil nutrition around roo ts w as changed and the absorbability of nut ri tio n w as reduced .

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Last Update: 2016-12-31