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Influences of mechanized tillage and sowing modes on soil physical properties,soybean yield and economic benefits in mollisols region of Northeast China

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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 130-139页

作者： Haitao Chen Jian Sun Yiming Zhang Jinyou Qiao College of Engineering Northeast Agricultural UniversityHarbin 150030China Heilongjiang Province Technology Innovation Center of Mechanization and Materialization of Major Crops Production Harbin 150030China College of Mechanical and Electrical Engineering East University of HeilongjiangHarbin 150066China

Appropriate mechanized straw returning and tillage sowing techniques were effective means to optimize soil physical properties and enhance agricultural productivity,as well as important measures for the conservation and restoration of mollisols region in Northeast *** the condition of full-scale maize straw returning,four mechanized tillage and sowing modes were set,including plough tillage and sowing(PTS),combined tillage and sowing(CTS),no-tillage and sowing(NTS),and no-tillage and sowing with straw mulching(NTSM).In 2020 and 2021,the study investigated the effects of different mechanized tillage and sowing modes on soil physical properties,soybean yield and economic *** results showed that during the pod-setting and pod-filling period of soybean,the NTS and NTSM treatments exhibited better effects on deep soil insulation and shallow soil moisture retention,the soil physical structure of PTS and CTS treatments were relatively *** with PTS and CTS treatments,NTS and NTSM treatments significantly increased soil gravimetric water content(SWC)by 2.35%to 7.98%in the 5-15 cm soil layer and increased soil temperature(ST)by 3.94%to 10.42%in the 25-35 cm soil layer(psoybean yield of NTSM treatment in 2020 was not significantly different from PTS and CTS treatment(p>0.05),the soybean yield of NTSM treatment in 2021 significantly increased by 7.30%and 5.84%over PTS and CTS treatments,*** the average annual profit per unit area of NTSM treatment increased by 12.84%,12.41%and 8.57%compared with PTS,CTS and NTS treatments,***,it was recommended to combine NTS

关键词： mechanized tillage and sowing modes full-scale straw returning soil physical properties soybean yield economic benefits mollisols conservation

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Year-to-Year and Maturity Variation in Rainfed soybean yield by Planting Dates

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Agricultural Sciences in China 2004年第3期3卷 186-191页

作者： YANGJin-zhong MarkAlley JonRoygard CollegeofAgronomy ShanxiAgriculturalUniversityTaigu030801P.R.China DepartmentofCropandSoilEnvironmentalSciences VirginiaTechUSA

The interactions on rainfed soybean yield among planting date, maturity, and year-to-yearclimate change were studied using CROPGRO-soybean model. Simulations were based on 19 plantingdates, maturity groupsⅢ, ⅣandⅤ, 30 years recorded weather data from Corbin, Suffolk,West Point in Virginia, USA. yield was similar on early plantings and went down with lateplantings. Both grand and year-to-year variation of soybean yield declined linearly withplanting date. Year-to-year climate variation was dominant yield variation source inrainfed soybean production. Interaction occurred between planting date and *** planting dates for different sites lied within 130th-170th day of a *** is recommended for profitable crops, especially in Corbin and West Point.

关键词： Simulation soybean yield Planting date Climatic risk Maturity

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Coupling Effect of Water and Fertilizer on soybean yield and Nutrient Absorption

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Journal of Northeast Agricultural University(English Edition) 2003年第2期10卷 105-114页

作者： HAO Li ZU Wei SUN Cong-shu LEI Shu-xia LIU Li-jun Northeast Agricultural University HarbinHeilongjiang150030China

soybean cultivar Bei 92-28 was tested in this experiment in 2000 to study the coupling effect of water and ferilizer on soybean *** results showed that the effect of irrigation varied among the levels of fertilizer application,and vice versa;pods per plant,seeds per *** 100-seed weight had positive correlations with soybean yield,but the degrees of correlations of different treatments were various;LAI and dry matter accumulation could be significantly increased when watered and applied fertilizer with different levels,but high fertilizer application treatment didn't obtain the highest yield;watering could increase the absolute absorption amount of N,P,K in seeds,but the accumulation rates were various.

关键词： coupling effect water fertilizer soybean yield

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Some Aspects of yield Physiology Research in soybean

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Journal of Northeast Agricultural University(English Edition) 2000年第1期7卷 71-78页

作者： LIUXiao－bin StephenJ.Herbert HeilongjiangInstituteofAgriculturalModernization ChineseAcademyofSciencesHarbin150040PRChina Depart

The paper reviews the factors and mechanisms involved in the regulation of seed growth,discusses the roles of source sink relationship in yield formation and effects of climate change and canopy photosynthesis on gro... 详细信息

关键词： seed growth source/sink climate change canopy photosynthesis soybean yield

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