Gao, Meihua

Li, Meihua

Wang, Jianguang

Yao, Guiping

Zhi, Zhongsheng

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings 21st International Grassland Congress / 8th International Rangeland Congress Effects of Fertilizer and Plant Density on the Fresh Biomass of Sudan Grass Zhongsheng Zhi Inner Mongolia Agricultural University, China Guiping Yao Inner Mongolia Agricultural University, China Jianguang Wang Inner Mongolia Agricultural University, China Meihua Gao Inner Mongolia Agricultural University, China Meihua Li Inner Mongolia Agricultural University, China Follow this and additional works at: https://uknowledge.uky.edu/igc  Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/2-3/8 The 21st International Grassland Congress / 8th International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact UKnowledge@lsv.uky.edu. 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅰ 　 瞯 ]403　 瞯Grasslands/Rangelands Resources and Ecology ——— Soil Quality and Plant NutritionEffects of fertilizer and plant density on the fresh biomass of Sudan grassZhongsheng Zhi ,倡 Guip ing Y ao , Jianguang W ang , Meihua Gao , Meihua L iCollege o f A gronomy , Inner Mongolia A gricultural University , H uhhot , China , ０１００１８ , Phone : ０４７１‐４３０１３１７ ,E‐mall : mrz z s＠ １２６ .comKey words : Sudan grass Neinong No .１ ,mathematic model ,yield , planting density , fertilizationIntroduction Sorghum sudanense Stapf . cv . Neinong No .１ was a hybrid of Sorghum and Sudan grass bred by our group . Theobjective of this study was to evaluate the effects of planting density and fertilizing level on fresh matter ( FM ) yield of NeinongNo .１ . The optimum cultivation condition was obtained .Material and methods Sudan grass No .１ was seeded with four randomized replications for １１ treatment plots and one controlplot in a greenhouse in ２００６ . The area of each plot was １４m２ . The experimental field located in Huhhot . Data were analyzedwith SAS ９ .０ sof tware .Results and analysisRegression analysis of FM yield of Sudan grass The relation between FM yield and other factors were analyzed with the regressionsimulation method at different harvest time . One regression equation was obtained with stepwise regression :y２ （FM weight ( kg ) /２ m２ ) ＝ － ３ .３５６９５ ＋ ０ .０３８８５x１ ＋ ３ .８７５３３x２ ＋ ０ .０６９９３x３ － ０ .３６９３６x４It is clear that the grass height ( x２ ) plays a major role in Sudan grass production . However , germination rate ( x１ ) had a minorinfluence on the FM yield .Single‐factor analysis For two harvest times : July １９ and September ２ , the differences of FM yield between １１ treatment plotsand one control plot were not significant ( p ＞ ０ .０５) . If analyzed with single‐factor analysis of variance , however , the FM yieldof Sudan grass in No .９ treatment plot was highest ( p ＜ ０ .１５) , which was １４６１３畅９７kg /６６７m２ .Conclusion In current study , the results showed that cultivating measurement combination of No .９ plot , in which plantingdensity was ４５０２２ plants/ ha and ２０kg additional urea was applied to the plot during the grow th , was optimum for themaximum yield of FM of tested Sudan grass , which was harvested for four times .

Effects of Fertilizer and Plant Density on the Fresh Biomass of Sudan Grass

https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=2570&amp;context=igc

Effects of Fertilizer and Plant Density on the Fresh Biomass of Sudan Grass

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