Are triploid large-leaf black locust and large-leaf fast-growing locust the same variety?

I. The tetraploid large-leaf black locust is an excellent variety selected through years of dedicated research and experimental comparison from among several superior polyploid black locust clones introduced from abroad. The tetraploid large-leaf black locust is an artificially induced tetraploid plant, with the characteristics of fast growth, large leaves and high biomass. Its leaf width is more than 2 times that of the common black locust, and its compound leaf dry weight, single leaf dry weight and total leaf dry weight are each 1.5 times or more than those of the common black locust. Compared with the common black locust, the tetraploid large-leaf black locust has a denser crown, thicker branches and a stronger photosynthetic capacity.

The tetraploid large-leaf black locust has very high crude protein and crude fat contents, which are 118% and 126% of those of the common black locust respectively. It is very suitable for use as animal feed, and the tetraploid large-leaf black locust is extremely tolerant of cutting and coppicing, and with certain management techniques it can be harvested and used repeatedly.

The tetraploid large-leaf black locust is tolerant of barren soil, and its root system can fix nitrogen, so it can serve as a pioneer tree species for greening barren hills and slopes, a tree species for soil and water conservation in river basins, and an excellent tree species for greening around the four sides.

II. The large-leaf fast-growing locust is a new fodder variety introduced from South Korea. It is a leguminous tree, and after being coppiced and harvested several times each year, it grows in clumps and clusters. The large-leaf locust has broad and large leaves, with a total petiole length of 40 cm-55 cm, leaf length of 8 cm-15 cm and width of 5 cm-8 cm, and the leaf length and width are 3 times-5 times those of the common black locust respectively. The leaves are thick and fleshy, and the dry weight of a single leaf is 4 times-6 times that of the common black locust. It does not set seed and reproduces by roots.

The large-leaf fast-growing locust is cold-tolerant and drought-tolerant, and can grow normally in areas with an annual precipitation of more than 200 mm. However, it is not tolerant of flooding, and water accumulation at the roots will cause root rot and death. It has no strict requirements for soil, and grows fastest on slopes, sandy soil, clay soil, lightly saline-alkali land, and even on slag heaps that have existed for many years and on loam soil. The roots have root nodules, so they have the effect of fixing nitrogen and improving the soil. It is strongly light-demanding and not tolerant of shade.