Shop To Bamboo Growth Regulation And Feed Value Of The Initial Research

Arundinaria argenteostriata is a dwarf bamboo. There is no system research paper about it in China. Height and rhizome growth law, preliminary assessment of feeding value and seasonal changes of nutritional components of leaves were investigated in this paper. The results are as follows:Bamboo shoot of Arundinaria argenteostriata emerged from middle March to middle April, continuing 37 days. The bamboo shoots which emerged during earlier and intermediate period have a high survival rate. The height growth of bamboo culm followed the slow-quick-slow pattern. It usually needs about 39 days to finish the process. The reason why later emerged shoots can finish height growth quickly is that they had short early growth stage and last growth stage. The height-growth of Arundinaria argenteostriata presents a positive correlativity with the soil temperature.The investigation on rhizome system of Arundinaria argenteostriata in Nanjing, Weifang, Shandong Province and Beijing reveals that the rhizome structure of this bamboo belongs to mixed type. The rhizome and buds distributes mainly in the 0～10cm soil layer. The most bamboo shoots are generated from the rhizome of 2～3 years. The rhizomes of 5 years are aging gradually. Rhizome growth have two main characters: one is that the top of rhizome won't fall off, and continue to grow in the next year and from a long rhizome without branches; the other is that there is almost no rhizome developed from the bud at the culm base.Crude nutritional components of leaves of Arundinaria argenteostriata are as follows: water content: 60.99%, crude protein content: 15.084%, crude fat content: 5.031%, crude fiber content: 30.438%, crude ash content: 10.976%, carbohydrate content: 15.834%. 18 protein amino acids and a special amino acid were detected from leaves, in which 8 essential amino acids are very rich. The contents of some elements such as Zn, Cr, Cu, Fe, Mg, Ca are high. They could completely meet the needs of livestock to the various elements. Considered the nutritional components, Arundinaria argenteostriata is a high quality forage grass.Seasonal trend of above ground biomass is typical single-peak. The accumulation of DM and various nutrients is gradually increasing with the process of growth(317.1g/m2→641.3 g/m~2), but the crude protein content(16.37%→7.09%)and digestibility of nutrients(45.59%→23.29%)is gradually declining. Considered the hay production and nutrients contents, the best mowing time is between July and September.