Study On The Transromation Of Nitrogen, Phosphor And Potassium 15n-labeled Hyacinth

Hyacinth is an important bulbs flower in the world with high ornamental value. Under the treatment of different dose of nitrogen and fertilization time, nitrogen, phosphor and potassium transformations of hyacinth are studied by the technology of ¹⁵N-labeled as well as the changing law of organs'dry matter. The results are as follows:(1) The period during incipient to florescence, dry matter of the bulb has little growth, while dry matter of root-leaf-flower grows rapidly. After flower-wizened, bulb's dry matter grows rapidly, the velocity reaching the peak, while the velocity of root-leaf-flower becomes slow. At bulb-maturity, the bulb's velocity of dry matter growth becomes flat, and root-leaf-flower begins to consume dry matter. For different dose of nitrogen, treatment of 0.4g is beneficial to the dry matter's growth of bulb, while treatment of 1.0g is beneficial to the dry matter's growth of root-leaf-flower. For different time of fertilization, fertilizing by stages at incipient and florescence is beneficial to the dry matter's growth of bulb, while fertilizing one time at incipient is beneficial to dry matter's growth of root-leaf-flower.(2) From incipient to florescence, bulb transports nitrogen to root-leaf-flower and dose not increase nitrogen while root-flower has a rapid growth of nitrogen. After flower-wizened, the bulb's velocity of increasing nitrogen raises quickly, while root-leaf-flower appears the consumption of nitrogen. At bulb-maturity, bulb's velocity of increasing nitrogen decreases significantly. And root-leaf-flower consumes nitrogen rapidly.(3) The bulb has a very low absorption level to fertilization nitrogen at florescence. As the growth periods promote, the fertilization nitrogen raises its ratio in the bulb. In a suitable range, as the dose of nitrogen increase, its ratio in the bulb raises. While exceeding the optimal dose, more nitrogen will decrease the ratio in the bulb. But increasing nitrogen can raise root-leaf-flower's absorption to the fertilization, which demonstrates that root-leaf-flower has a large requirement to nitrogen. For different fertilization time, fertilizing by stages at incipient and florescence can raise bulb's ability of absorbing fertilization, while fertilizing one time at incipient can raise the ability of root-leaf-flower.(4) Organs of hyacinth for different treatment have the consistent law in absorbing phosphor and potassium. During incipient to florescence, bulb has little absorption to phosphor and potassium, while root-leaf-flower increases them rapidly. After flower-wizened, the velocity of bulb absorbing phosphor and potassium reaches the peak, while the velocity of root-leaf-flower becomes slow. At bulb-maturity, the velocity of bulb becomes slow and root-leaf-flower transports phosphor and potassium to bulb. On the view, low-middle level of nitrogen can promotes bulb absorbing phosphor and potassium; while high level of nitrogen is beneficial to root-leaf-flower retain phosphor and potassium.(5) Reasonable fertilization plan may be implemented for different object in practical production. The cultivation for flower can increase the dose of nitrogen to postpone root-leaf-flower's senescence, thus raising the ornament of hyacinth. On another way, the cultivation for harvesting bulbs should decrease the dose of nitrogen properly to ensure root-leaf-flower can transport nutrition to bulb timely.