久树开花结实习性及繁殖技术研究

久树引种到云南干热河谷区能正常生长和开花结实,其植株开花率约30%,19.2%开雄花,10.8%开杂性花;风媒为主;花期主要集中在每年3月中旬至4月上旬;结果率为开花数的39.9%,丰果率仅为开花数的6.3%,大量落花落果的主要原因是3-4月的河谷大风和雨季初期的大风降雨,在元江河谷区于7月下旬至8月初可采种,其它地方稍晚。久树种子育苗需对种皮进行处理,机械破壳是目前最简便,经济和有效的方法,育苗地要选择光照和通风好的地方。

Study on Blooming,Fruiting and Breeding Technicque of Schleichera oleosa

Schleichera oleosa is the best host tree species of Kerria lacca. The trees can grow,flower and fruit normally in hot and dry valley area of Yunnan Province.It begins to bud in early March,and most of which blooms from the middle of March to the middle of April.The flower rate is about 30%,in which 19.2% is male flower and 10.8% is perfect flower (both staminate flower and monoclinous flower). Anemophilous pollination exists between different flowers. One flower cluster of perfect plant has 41 flowers, 60% of which drops,the rate of fruiting at last is 39.9% and the last fruit holding rate is 6.3% of the perfect flower and 38.2% of the beginning fruit. The shattering rates of flower and fruit are very high mainly for strong wind in March and rainwater in May. The seeds take to mature from the end of July to middle of August at Ynanjiang. The shell of seed should be broken that can makes germination rate high. It is highly important to locate a nursery where is full of light and airing.