Mineral elements play a crucial role in plant growth and development.Ensuring the proper supply of these elements in the soil to maintain the optimum range within plants is necessary for achieving optimal fruit yield ...Mineral elements play a crucial role in plant growth and development.Ensuring the proper supply of these elements in the soil to maintain the optimum range within plants is necessary for achieving optimal fruit yield and quality.Unfortunately,the application of NPKCaMg fertilizers to fruit trees is often either insufficient or excessive,leading to environmental degradation and reduced fruit yield and quality.To assess the impacts of different fertilizers on the biological traits of grapes and their responses to nutritional elements,Merlot grapevines were subjected to multi-nutrient fertilization over four consecutive growing seasons from 2018 to 2021 in Penglai District,Yantai,China.Principal component analysis revealed that the T11 treatment,consisting of N_(3)P_(3)K_(1)Ca_(2)Mg_(4),was the most suitable fertilizer type and application design among the treatments.The application of T11 resulted in a significantly lower(24.29–35.20%)fertilizer usage,and it resulted in increases in several important traits such as100-grain weight(HGW),number of seeds(SN),total soluble solids(TSS),total seed phenols(SP),seed flavanols(SFI),and seed tannins(ST)by 3.28–12.84%,3.76–20.03%,1.11–14.95%,2.16–23.69%,11.00–32.78%,and1.07–23.35%,respectively,compared to the T14(N_(4)P_(2)K_(3)Ca_(1)Mg_(4)),T16(N_(4)P_(4)K_(1)Ca_(3)Mg_(2)),T13(N_(4)P_(1)K_(4)Ca_(2)Mg_(3)),and T15(N_(4)P_(3)K_(2)Ca_(4)Mg_(1))treatments.Flowering and fruiting processes exhibited a considerable demand for NPK,with higher requirements for K and B during fruit growth and development compared to the other macroelements and micronutrients,respectively.Excessive K in soil enhanced the competitive inhibition of Ca uptake by Merlot grapevines.The optimal ranges of mineral element contents for total peel phenols(PP),peel flavanols(PFI),total peel flavonoids(PFD),total seed phenols(SP),and seed tannins(ST)were primarily influenced by grape variety and nutritional analysis method.In conclusion,the careful selection of NPKCaMg fertilizer and its precise application to soil at an optimum range of mineral elements is critical for grapevine growth and development.展开更多
Achieving global fruit demand can be realized through the application of agricultural technologies.However,it is crucial to first overcome the enormous agricultural challenges posed by the implementation of efficient ...Achieving global fruit demand can be realized through the application of agricultural technologies.However,it is crucial to first overcome the enormous agricultural challenges posed by the implementation of efficient irrigation technologies.To address the issues related to inadequate water supply and inefficient traditional fruit tree irrigation methods,we propose a cost-effective and efficient approach-the“439”field precision irrigation scheme.This scheme predicts four relative soil water content minimum thresholds(RSWCTs)and maximum(RSWCTe)thresholds[relative to the percentage of field capacity(FC)]for starting and ending irrigation.By exploring the relationship between RSWCTs,RSWCTeand fruit quality,we assessed the scheme's effectiveness.A practical case study was conducted on grape(Vitis vinifera L.,‘87-1')cultivated in a facility from 2019 to 2022 to evaluate the scheme's impact on irrigation management.The results indicate that maintaining70%-80%FC from germination stage(GS)to end bloom stage(EBS),70%-80%FC from EBS to veraison stage(VS),55%-70%FC from VS to maturation stage(MS),and 55%-65%FC from MS to deciduous stage(DS)improve single grain weight(SGW).Similarly,to improve total soluble solid content,60%-80%FC is suggested from GS to EBS,70%-80%FC from EBS to VS,60%-70%FC from VS to MS,and 60%-70%FC from MS to DS.To improve peel strength and fruit quality index(FQI),70%-80%FC is recommended from GS to EBS,60%-70%FC from EBS to VS,55%-65%FC from VS to MS,and 55%-70%FC from MS to DS.This management tool helps farmers optimize irrigation efficiency and increase profits by growing high-quality fruit.In summary,the implementation of the“439”field precision irrigation system,coupled with fruit quality analysis,holds promise for enhancing water efficiency in precision agriculture.展开更多
With the grape variety"Summer Black"as the test material,the effects of different shoot-fruit ratios on grape yield,fruit quality and grapevine storage nutrient were investigated for 2 consecutive years,so a...With the grape variety"Summer Black"as the test material,the effects of different shoot-fruit ratios on grape yield,fruit quality and grapevine storage nutrient were investigated for 2 consecutive years,so as to determine the optimized load for Summer Black grapes in Shandong.The results showed that the grapes with shoot-fruit ratio of 1∶1 had the highest soluble solid content,vitamin C content and grapevine storage nutrient.Based on the comprehensive analysis,the shoot-fruit ratio of 1∶1 was the optimized load for Summer Black grapes in Tai an of Shandong Province,and the yield was 1179.37-1288.63 kg per 667 m^2.展开更多
基金funded by the earmarked fund for China Agriculture Research System(NYCYTX-30-ZP)the Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciences(CAASASTIP-2021-RIP-04)。
文摘Mineral elements play a crucial role in plant growth and development.Ensuring the proper supply of these elements in the soil to maintain the optimum range within plants is necessary for achieving optimal fruit yield and quality.Unfortunately,the application of NPKCaMg fertilizers to fruit trees is often either insufficient or excessive,leading to environmental degradation and reduced fruit yield and quality.To assess the impacts of different fertilizers on the biological traits of grapes and their responses to nutritional elements,Merlot grapevines were subjected to multi-nutrient fertilization over four consecutive growing seasons from 2018 to 2021 in Penglai District,Yantai,China.Principal component analysis revealed that the T11 treatment,consisting of N_(3)P_(3)K_(1)Ca_(2)Mg_(4),was the most suitable fertilizer type and application design among the treatments.The application of T11 resulted in a significantly lower(24.29–35.20%)fertilizer usage,and it resulted in increases in several important traits such as100-grain weight(HGW),number of seeds(SN),total soluble solids(TSS),total seed phenols(SP),seed flavanols(SFI),and seed tannins(ST)by 3.28–12.84%,3.76–20.03%,1.11–14.95%,2.16–23.69%,11.00–32.78%,and1.07–23.35%,respectively,compared to the T14(N_(4)P_(2)K_(3)Ca_(1)Mg_(4)),T16(N_(4)P_(4)K_(1)Ca_(3)Mg_(2)),T13(N_(4)P_(1)K_(4)Ca_(2)Mg_(3)),and T15(N_(4)P_(3)K_(2)Ca_(4)Mg_(1))treatments.Flowering and fruiting processes exhibited a considerable demand for NPK,with higher requirements for K and B during fruit growth and development compared to the other macroelements and micronutrients,respectively.Excessive K in soil enhanced the competitive inhibition of Ca uptake by Merlot grapevines.The optimal ranges of mineral element contents for total peel phenols(PP),peel flavanols(PFI),total peel flavonoids(PFD),total seed phenols(SP),and seed tannins(ST)were primarily influenced by grape variety and nutritional analysis method.In conclusion,the careful selection of NPKCaMg fertilizer and its precise application to soil at an optimum range of mineral elements is critical for grapevine growth and development.
基金funded by the Key R&D Project of Shandong Province(Grant No.2022TZXD0010)Agricultural Science and Technology Innovation Program of the Chinese Academy of Agricultural Sciences(Grant No.CAAS-ASTIP-2015-RIP-04)National Modern Agricultural Industrial Technology System Construction Project(Grant No.NYCYTX-29-ZP).
文摘Achieving global fruit demand can be realized through the application of agricultural technologies.However,it is crucial to first overcome the enormous agricultural challenges posed by the implementation of efficient irrigation technologies.To address the issues related to inadequate water supply and inefficient traditional fruit tree irrigation methods,we propose a cost-effective and efficient approach-the“439”field precision irrigation scheme.This scheme predicts four relative soil water content minimum thresholds(RSWCTs)and maximum(RSWCTe)thresholds[relative to the percentage of field capacity(FC)]for starting and ending irrigation.By exploring the relationship between RSWCTs,RSWCTeand fruit quality,we assessed the scheme's effectiveness.A practical case study was conducted on grape(Vitis vinifera L.,‘87-1')cultivated in a facility from 2019 to 2022 to evaluate the scheme's impact on irrigation management.The results indicate that maintaining70%-80%FC from germination stage(GS)to end bloom stage(EBS),70%-80%FC from EBS to veraison stage(VS),55%-70%FC from VS to maturation stage(MS),and 55%-65%FC from MS to deciduous stage(DS)improve single grain weight(SGW).Similarly,to improve total soluble solid content,60%-80%FC is suggested from GS to EBS,70%-80%FC from EBS to VS,60%-70%FC from VS to MS,and 60%-70%FC from MS to DS.To improve peel strength and fruit quality index(FQI),70%-80%FC is recommended from GS to EBS,60%-70%FC from EBS to VS,55%-65%FC from VS to MS,and 55%-70%FC from MS to DS.This management tool helps farmers optimize irrigation efficiency and increase profits by growing high-quality fruit.In summary,the implementation of the“439”field precision irrigation system,coupled with fruit quality analysis,holds promise for enhancing water efficiency in precision agriculture.
基金Supported by the National Key Technology R&D Program of China during the"Twelfth Five-Year"Plan(2014BAD16B05-2)the Key Research and Development Program of Shandong Province(2016ZDJS10A01)the Innovation Engineering Project of Shandong Academy of Agricultural Sciences(CXGC2016B07,CXGC2016D01)
文摘With the grape variety"Summer Black"as the test material,the effects of different shoot-fruit ratios on grape yield,fruit quality and grapevine storage nutrient were investigated for 2 consecutive years,so as to determine the optimized load for Summer Black grapes in Shandong.The results showed that the grapes with shoot-fruit ratio of 1∶1 had the highest soluble solid content,vitamin C content and grapevine storage nutrient.Based on the comprehensive analysis,the shoot-fruit ratio of 1∶1 was the optimized load for Summer Black grapes in Tai an of Shandong Province,and the yield was 1179.37-1288.63 kg per 667 m^2.
