What are the microorganisms in tobacco?There are mainly the following types of microorganisms in tobacco:
1. ** tobacco root-zone microorganisms **: The root-zone is the narrow soil around the plant root affected by the root system. The root-zone microorganisms refer to the soil microorganisms that grow and are closely attached to the plant root system and are directly affected by the root system. In the agricultural ecosystem, they have a profound impact on the growth, nutrition and health of tobacco crops. The current research on them mainly focuses on bacteria, fungi and fungi.
2. ** Microorganisms in the foliage of tobacco **: In 1981, it was defined as the microorganisms that attached to or parasitized on the direct surface habitat of plant leaves (i.e., the leaf surface). Some people also believed that the habitat composed of the effective parts of plants such as leaves, stems, flowers, fruits, etc. was collectively called the foliage, and the microorganisms that lived on the surface and inside were called the foliage microorganisms.
3. ** Endophyte **: refers to the microorganisms that live in various tissues and organs of healthy plants at a certain stage or all stages of their life cycle, including enddophytic fungi, enddophytic bacteria, and enddophytic fungi. The research on tobacco endophages was mainly focused on the isolation and identification of tobacco endophages.
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Primary school homework management work report summary model essayThe following is a summary of a primary school student's homework management report:
** Report on Primary School Students 'Homework Management **
I. Work background and objectives
With the development of education philosophy, homework management played an important role in promoting students 'all-round development. The implementation of the "double reduction" policy emphasized reducing the burden of students 'homework and improving the scientific, reasonable and effective management of homework to ensure the healthy growth of students, stimulate students' interest in learning and improve their overall quality.
II. Management Execution
1. Operation planning and standard setting
At the beginning of the semester, the teaching and research groups discussed the homework plan in depth. In terms of determining the proportion structure of homework and the frequency of written practice, the requirements of the science section, the use of the homework book, the type of homework arrangement, the time of completion of the homework, whether it was the focus of the semester, and the design of the customized homework should be considered comprehensively, and a written record of the semester homework should be formed. At the same time, the content of the practice printing, such as the practice content, frequency, time, paper size, etc., must also be recorded. These records were only confirmed after the subject in charge reviewed them and made suggestions for optimization.
2. The monitoring mechanism for the implementation of assignments
- Class homework weekly publicity system: Every Monday morning, each class will post a week's homework on the grade homework bulletin board, covering the names of teachers teaching Chinese, Mathematics, English, Physical Education, and other subjects, the contents of the week's class hours, homework content, estimated completion time, and the total time of written homework completion every day. It will be subject to the supervision of the school leaders, all teachers, and students.
- Total amount review and quality inspection system: The subject in charge and the head teacher coordinated the total amount of homework review and supervision. The teaching office strengthened the daily inspection. Through the random inspection of the class students 'notebooks, it was monitored whether the homework volume of each subject was appropriate and whether the teacher's teaching behavior was in compliance. At the same time, a regular inspection and evaluation system for the quality of homework should be established, and the results would be linked to the teacher's semester teaching ability assessment. The subject department was responsible for the comprehensive evaluation of the homework from various aspects such as homework design, tutoring, marking, effectiveness, and the cultivation of students 'learning habits. It would also provide timely feedback on the results, organize experience sharing, and promote the optimization of the homework. In addition, the rule that no written homework was given for the first and second grades and no more than one hour of written homework for the third to fifth grades was strictly enforced.
3. Home-school collaboration
- Promotion and guidance: The school publicized the spirit of "Five Management" and "Double Reduction policy" to parents through "Online Parent-Teacher Conference" and "Letter to Parents", guided parents to establish correct educational views and values, advocated "simultaneous development of five education", and guided students to reasonably use their extra-cursory time to cultivate interests and hobbies.
- Supervision and feedback: establish a parent visit system, invite representatives of the family committee to participate in the "double reduction in action" class supervision work, through attending classes, interviewing parents and student representatives, conducting education and teaching satisfaction survey and other channels, understand the effectiveness of the school's burden reduction work and make timely improvements.
4. homework design optimization
- Theory study: organize teachers to study theoretical books and instruction manuals related to homework design, such as "Analysis Homework-Research Based on 30000 Data","Primary School Homework Design and Execution Guidance Manual","Unit Homework Design Guide", etc., to improve teachers 'understanding of homework functions and design ability.
- Unit assignment design: Language, Mathematics, and Mathematics pay attention to unit assignment design. The teaching and research group started from the unit as a whole, coordinated the teaching objectives and homework objectives, carefully selected the homework content, arranged the homework time, difficulty, and type, and took into account the homework marking, analysis, evaluation, and tutoring. The unit homework was divided into basic knowledge routine homework and core knowledge key homework. According to the curriculum standards, teaching materials, students 'learning situation and teaching objectives, teachers followed the principle of "refinement and application". They avoided mechanical repetition in the basic homework and created situation tasks in the core homework to cultivate students' abilities.
Third, the specific form of the assignment design
1. Layered homework design
Some schools used level-by-level assignments to design questions of type A, B, and C according to the actual situation of the students. Students were required to complete at least Class A questions, and those who had the ability were encouraged to challenge Class B and C questions. This way, students would no longer feel burdened by homework. They could also regain their confidence, enjoy learning, and improve their grades.
2. Combination of basic and flexible homework
Under the premise of controlling the total amount of homework, teachers of various subjects flexibly designed customized homework for different students. For example, designing special homework for students with poor mathematical computing ability would help improve each student's academic performance.
3. Discipline and practical homework complement each other
In addition to academic homework, he also paid attention to practical homework. For example, the practice of the "Disciple Rules" growth diary as a primary school student's moral education homework, recording weekly filial piety actions, allowing students to participate in housework, farm work, etc., to develop good habits. There were also schools that launched a "special activity to regulate students 'homework writing." The teachers and students of each class jointly selected excellent homework that was well-written and beautiful to be posted outside the classroom for everyone to learn. At the same time, they displayed the students' homework that had improved. It was updated regularly to improve the students 'writing standards.
IV. Achievement and Impact
Through the series of homework management measures mentioned above, significant results were achieved in reducing the burden of students 'homework, ensuring adequate sleep for students, protecting their eyesight, and promoting the comprehensive development of students' physical and mental health. At the same time, all the students in the school were happy to learn and actively participated in learning activities. Their interest in learning and overall quality were effectively improved.
V. Future prospects
Although he had made some achievements in homework management, he still needed to explore and improve it. In the future, he would continue to study the scientific nature of homework management, further improve homework design, better meet the individual needs of different students, and continue to promote the development of primary school homework management in a direction that was more conducive to the growth of students.
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