笔者通过教学实践,对“九年制义务教育课本·劳动技术·园艺”教材中蟹爪兰嫁接材料的砧木,作了改进。原教材选用仙人掌作砧木。仙人掌虽有取材方便、成活率高的优点,但在其肉质茎上,生有较多的变态叶刺,学生在嫁接操作的过程中,都受到不同程度的刺痛。从而影响教学的效果。我从仙人掌的花开中,寻找代替砧木的替代材料,经过摸索和试验,成功地找到了令箭荷花。以此为砧木的蟹爪兰嫁接的具体操作如下: 1.选择生长一年令箭荷花的叶状茎,用锋利的钢刀(经酒精消毒),对茎横切一刀。留下 Through the teaching practice, the author made improvements on the rootstocks of the grafted materials of Shrimp claw in the textbook of “nine-year compulsory education textbooks, labor skills and gardening”. The original textbook selection cactus as stock. Although cacti is easy to draw, the advantage of high survival rate, but in its fleshy stems, students have more abnormal thorn, students in the grafting operation, are subject to varying degrees of tingling. Thus affecting the effectiveness of teaching. From the blossoms of the cactus, I searched for alternative materials instead of rootstocks. After groping and experimenting, I succeeded in finding the arrow lotus. As a rootstock of the shrimp clawed Lan grafted concrete operation is as follows: 1. Choose to grow a year to make the arrow lotus leaf-shaped stems, with a sharp steel knife (alcohol disinfection), the cross-cut stems. Stay