Pruning has a great influence on the flowering and fruiting of papaya, and should be carried out from 65438+February to March of the following year. Adult trees are pruned 1 time every year, and diseased branches, dead branches, old branches and over-dense young branches are pruned, so as to keep the tree shape empty inside and round outside, with more flowers and more fruits. Old trees that are older than 10 and have begun to decline should be renewed. Before freezing, all the above-ground parts can be cut off, so that the old roots can grow seedlings and cultivate new plants.
Tree papaya, also known as pear and longmu, is divided into many varieties, such as wrinkled papaya and flowering papaya, but it is absolutely different from papaya. Please don't confuse them, they belong to deciduous trees. The whole plant of papaya tree can be used as medicine, and it is also a common ornamental tree species in landscaping. Its producing areas are Shandong, Anhui, Jiangsu, Zhejiang and Henan. It blooms in April and bears fruit to 10 in September. Pear fruit is oval, with a length of 10 ~ 15 cm, yellow-green at maturity, 5 cells, and most seeds in each cell. It can be planted as a green seedling, and the whole plant can be used as medicine, with high economic value. The whole plant is used as medicine, and papaya tree is also a common tree in landscaping. It is widely planted in East China, Central China and South China. Mainly distributed in Jiangsu, Henan, Shandong, Anhui, Zhejiang, Hebei, Jiangxi and other places.
morphological character
Shrub or small tree, up to 5- 10 m, with bark falling off in pieces; Branchlets spineless, cylindrical, pilose when young, soon falling off, purple-red, biennial branches glabrous, purple-brown; Winter buds are semi-circular, with blunt apex, hairless and purplish brown. Leaf blade elliptic-ovoid or elliptic-oblong, sparsely obovate, 5-8 cm long and 3.5-5.5 cm wide, with acute apex, wide wedge-shaped or round base, prickly sharp serrations at the edge, glandular teeth at the top, densely covered with yellow-white villi when young, and soon falling off without hair.
leaf
Petiole is 5- 10 mm long, puberulent and glandular toothed; Stipules membranous, ovate-lanceolate, apex acuminate, margin glandular toothed, about 7 mm long. Flowers are solitary in leaf axils.
flower
Pedicel stubby, 5- 10 mm long, glabrous; Flower diameter 2.5-3 cm; Calyx tube bell-shaped outside glabrous; Sepals triangular-lanceolate, 6- 10 mm long, tapering at the top, glandular teeth at the edge, glabrous outside, densely covered with light brown fluff inside, reflexed; Petals obovate, pale pink; Stamens are numerous, not half as long as petals; Styles 3-5, connate at base, pilose, stigma capitate, with inconspicuous division, about as long as stamens or slightly longer.
fruit
The fruit is oval, long10-15cm, dark yellow, woody, fragrant and short. It blooms in April and bears fruit in September -65438+ 10. Papaya belongs to Sapindaceae in tree taxonomy, and its Chinese name is Guo Guan. It is an excellent woody oil-bearing tree species with many flowers and few fruits, and is known as "a thousand flowers and one fruit". Papaya tree is mostly shrubby and rarely grows into trees. There are not many trees that can blossom and bear fruit normally in papaya tree for more than a hundred years.
Growth habit
It enjoys abundant sunshine, drought tolerance and cold tolerance, and can adapt to any soil cultivation.