Summary : a green manure in agricultural production on the important role; Call develop green manure to improve the field of ecological environment; Analysis of the green manure production constraints; Made to vigorously develop green manure Keyword : green manure production; Important role; Paternity fat easily; Development measures
Pick to： the introduction is one of the important link in the classroom， class could catch the attention of students in the class starts at first， improve the classroom efficiency， arouse the enthusiasm of And for beginners physics of middle school students， middle school physical concepts relative to abstraction， class introduction can reduce the difficulty of knowledge gradient， help students to understand and maintain students' learning enthusiasm and interest in This article through to the teaching outline of knowledge requirements and the status of the junior middle school students' mental sums up the methods introduced in the new
Theclassintroduction is oneoftheimportantpartoftheclass teaching，which can seizethe attention of students at the beginning of the class，and can alspimprovetheefficiency of the classroom，as well astomobilizethe enthusiasm of studentsat thebeginning of Forbeginnerphysicshigh school students，highschoolphysicsconceptisrelatively abstract，theclassroomintroductioncan reduce thedifficultyofknowledgegradient，to help students understand，to keepstudentslearningenthusiasmandinterest in This papersummarizes theintroduction of new coursesonthesyllabusknowledgerequirements andjuniorhighschoolstudents'
