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池杉又叫池柏,是平原水网地区引种的主要速生用材树种之一。为了加速池杉的繁殖,1977年和1978年,我们在夏插的基础上,进行了塑料薄膜封闭育苗试验。试验结果表明:封闭育苗具有省工、成活率高、生长快、繁殖系数大的优点。对于其它树种,诸如桂花、雪松、龙柏等观赏树种用封闭育苗扦插亦具有同样的效果。现将两年来的试验结果归纳如下。一、塑料薄膜棚(下面简称塑棚)的设置:塑棚以东西向为好,棚架高50厘米,宽1.1米,长度不限,塑棚两侧用泥土压紧。塑棚两端不必封死,塑膜可以自由启闭,平时用砖石压紧,以防漏气透风。在塑棚上面要盖双
Iwakusa, also known as Iwate, is one of the main species of fast-growing timber introduced in the plain water network. In order to speed up the growth of Ipomoea in 1977 and 1978, we carried out the plastic film closed seedling raising experiment on the basis of summer planting. The results showed that: closed nursery has the advantages of saving labor, high survival rate, fast growth and large multiplication coefficient. For other species, such as osmanthus, cedar, cypress and other ornamental tree species with closed seedling cutting also have the same effect. Now two years of test results summarized as follows. First, the plastic film shed (hereinafter referred to as plastic shed) settings: Plastic shed to the east-west as well, scaffolding height 50 cm, width 1.1 m, length is not limited, plastic shed on both sides with the earth compact. Plastic shed at both ends without sealing, plastic film can be freely open and close, usually pressed with masonry to prevent leaks ventilation. In the plastic shed to cover double above