The Distribution of Relative Light Intensity in a Peach Tree Canopy Affects Fruit Yield and Texture

Light is crucial to the uniform production of high-quality fruit since it is the driving force for leaf photosynthesis and hence overall plant nutrition.The objective of this study was to evaluate the relationship between the distribution of relative light intensity in the peach tree(Prunus persica)canopy and the yield and texture of peach fruits.The canopy of 7-year-old‘Qiuyan’was divided into cubical volumes and the relative light intensity distribution was measured for each cube,along with yield distribution and fruit textural properties at different growing times.The relative light intensity decreased gradually from outside to inside the canopy and from top to bottom.The yield distribution and the relative light intensity were clearly correlated.The percentage of the canopy receiving<30%relative light intensity was 49.07%in May,56.02%in June,and 58.95%in July,whereas the percentage receiving>80%relative light intensity was 32.72%,17.28%,and 10.96%,respectively.Consistent with this,peaches were found in the upper and middle portions of the canopy,within 1.5-3.0 m of the top.The regression equation showed that fruit texture index correlated significantly with relative light intensity.Relative light intensity is the main factor affecting peach yield and texture and must be above 41.83%for good peach quality.Orchardists should carefully plan summer pruning strategies to adjust the number and spatial distribution of branches accordingly.

Review of Research on Nutritional Physiological Mechanism and Nutritional Diagnosis of Magnesium in Fruit Trees

Magnesium is an essential nutrient element for the growth and development of fruit trees.It not only participates in photosynthesis of plants,but also promotes physiological and biochemical reactions such as carbohydrate and protein synthesis,enzyme activation,and reactive oxygen species(ROS)metabolism.Magnesium deficiency in fruit trees will directly influence the growth and development of trees and the improvement of fruit quality.This study mainly reviews the nutritional and physiological mechanism of magnesium in plants and the nutritional diagnosis of magnesium deficiency in fruit trees,in order to provide a theoretical basis for further research on magnesium nutrition in fruit trees,and accordingly provide a certain reference for the application of magnesium fertilizer.

Some Thoughts on the Scientific Research Management of Young Scientific Research Managers in Research Institutes

By analyzing current situation of youth scientific research management in research institutes,including problems in scientific research management departments and problems faced by young scientific research management workers,it focuses on thinking from two aspects:the job of science and technology management and improving the working ability of young scientific research managers.It points out the four key cores in the work of youth scientific research management,namely,setting up project approval,establishing project technical files,doing well in project acceptance and achievements demonstration and promotion,doing well in achievements reward,and promoting the output of scientific and technological achievements.The working ability is improved by means of research integrity education,learning relevant professional knowledge while improving business capability,research on the art of scientific research management,and improving management level of science and technology innovation managers in the new era by"new four focuses".

Attaching Importance to the Training of Young Researchers and Promoting the Echelon Construction of the Research Institute

This paper analyzes the current situation of training young scientific and technological talents,attracting talents and making good use of talents in Changli Fruit Tree Research Institute of Hebei Academy of Agricultural and Forestry Sciences.There are some problems,such as lack of talent recruitment planning,and lack of follow-up training mechanism.This paper puts forward some measures,such as formulating a scientific recruitment plan,making a follow-up plan for talent training,building an ability-and performance-oriented evaluation mechanism for scientific and technological talents,so as to attach importance to the training of young scientific research talents and promote the echelon construction of the research institute.

Thoughts on the Professional Training of Scientific and Technological Management Team of High-level Talents in Provincial Agricultural Research Institutes

From two aspects:the composition of scientific research management institutions and the tasks undertaken by scientific research management departments,the present situation of scientific and technological management team in agricultural research institutes is expounded.Some problems existed in the scientific and technological management team of provincial agricultural research institutes are analyzed,such as uneven knowledge structure of scientific research management personnel,low degree of specialization,poor stability,lack of professional and systematic job training,etc.Professional development countermeasures are proposed,such as optimizing the structure of scientific research management team,establishing a professional management system with the characteristics of agricultural scientific research institutions,formulating corresponding evaluation mechanism for scientific research management personnel,and strengthening the training of agricultural scientific research management personnel.

Current Situation and Thinking of Introduction,Cultivation and Use of High-level Talents in Agricultural Research Institutes under the New Era:A Case Study of Hebei Academy of Agriculture and Forestry Sciences

Current situation of introduction,cultivation and use of high-level talents in agricultural research institutes are analyzed,and the optimized development strategy of further strengthening the construction,introduction,cultivation and use of high-level talent team is thought.It plays a positive role in provincial agricultural research institutes discovering,cultivating and gathering a number of high-quality talents and high-level innovation teams.