北碚榕试管苗优质苗木的培育

以北碚榕试管苗为材料,炼苗后采用可降解的无纺布育苗袋育苗,研究不同育苗基质(品氏营养土、蛭石、珍珠岩、林下腐殖土的不同体积混合物)、不同叶面追肥(0.5%～2%尿素、NPK复合肥和Hoagland营养液)对苗木生长和移栽成活率的影响.结果表明,最佳育苗基质为品氏营养土,试管苗移栽30d后株高增加1.90cm,叶片增加2.75枚,移栽成活率为96.29%;最适叶面追肥为1%尿素,喷施30d后(1次/3d),株高增加1.94cm,叶片增加3.2枚,移栽成活率达100%;株高7～9cm(叶龄5～8枚)的苗木,移栽田间30d后,株高增加1.4cm,叶片增加3.4枚,移栽存活率达96.25%,长势良好.

Cultivation Technologies of High Quality Seedlings for Ficus beipeiensis Plantlets

In this experiment, the test-tube seedlings of Ficus beipeiensis have been used as materials, the effects of different substrate (Pinkevitch nutrition soil, vermiculite, perlite, humus soil under the forest and their mixtures of different volumes) and foliar topdressing (0.5%-2% urea, NPK compound fertilizer and Hoagland nutrient solution) on seedling growth and transplanting survival rate have been studied by using biodegradable non-woven bag seedling breeding after the test-tube seedlings were refined. The results show that the optimum seedling substrate was Pinkevitch nutrition soil, the plant height increased by 1.90 cm, the number of leaves increased by 2.75, and the survival rate of transplantation was 96.29% after the plantlets transplantation for 30 days; the optimum foliar topdressing was 1% urea, the plant height increased by 1.94 cm, the number of leaves increased by 3.2, and the transplanting survival rate reached 100% after foliar fertilization for 30 days (once every 3 days); after transplanting for 30 days, the seedlings with height of 7-9 cm and 5-8 leaves increased by 1.4 cm, the number of leaves increased by 3.4, the survival rate reached 96.25%, and the seedlings grew well in the field.