| Through fertilization experimentations in conservatory and farm, we study the growth orderliness of Fokienia hodginsii semination seedlings, and how the fertilization measures influence the configuration, physiological, biological guideline, and nutrition guidelines of the seedlings. The matrix between nutrition element and yield was also be made in the experimentation of D-best saturation Design. The nutrition diagnosis criterion of Fokienia hodginsii seedlings were made by the method of DRIS(Diagnosis and recommendation integrated system). The criterion was tested among the metaphase seedlings by the diagrammatized DRIS method and expoent DRIS method.1 The growth curve and order cluster methods were used and contrasted in compartmentalizing periods of seedling tallness. The result indicating that the latter method could make for a more precision partition, and this partition was accord with the seedling biological characteristic, this partition also can be regard as gist of administering measures of the seedlings. It also established the base of a series of researches during the seedling period.2 In the single factor experimentation of nitrogenous fertilizer under the condition of conservatory, the seedlings in the basin that fertilizer 0.65~1.30gram nitrogenous grew best. When the nitrogenous fertilizer was excessive, the growth of seedlings were retrained or reduced. In December, the weight of the two fertilization series of high yields were 1.39 gram, 1.07gram each one seedling. The yields of the two series were 3.04,2.33 times of the yield of the series that had no nitrogenous fertilizer. It showed that proper nitrogenous fertilizer can obviously accelerate the growth speed of seedlings.3 The seedlings of II-6 series (N: 1.07; K:0.83 gram/basin);II-7 series (N: 1.07; P:0.60 gram/basin) grew best in D-best saturation experimentation of nitrogen, phosphor, Kalium elements. The weight of every seedling of this two series in the growth telophase was higher than seedlings of no fertilizer. The II-2 series of odd nitrogenous fertilizer (l.Sgram/basin) can't obviously hasten the growth in prophase, but in the anaphase the acceleration of the growth was visible. The 11-3(1.Ogram/basin),II-4(1.4gram/basin) series of odd phosphor and kalium fertilizer, in some degree accelerated the growth of seedlings. The seedlings of 1I-8(N,P,K:0.64,1.0,1.4gram/basin),lI-9(N,P,K: 1.8,0.35,1.4gram/basin),II-10(N,P,K: 1.8,1.0,0 .50 gram/basin) series grew worse than other series. Through our research the reason is that the gross chroma of Nitrogen, phosphor and kalium in the soil exceed the tolerance of the seedlings root. Among the three series the bad infection of II-9, 11-10 series was more serious. After all, in the cultivating medium which were absent with nitrogen, phosphor, kalium element, the phosphor and kalium fertilizer can accelerate the growth speed of seedlings in the initial stages, otherwise the nitrogenous fertilizer determined the growth in the anaphase.4 In the farm, just as the weight of nitrogen fertilizer in the basin increasing, theAacceleration to the seedlings changed to be restrain or poison. In the fertile nursery of north fujian province, 53.4kgN-hm-2~108.2kgN-hm-2 are suit to the Fokienia hodginsii seedlings. In the farm the series of highest yields was 2.58 gram/seedling; it was 44% higher than the blandness series.5 The photosynthesis, respiration, chlorophyll, root activity, NRA of ail the series' seedlings also were studied. Otherwise the variety disciplinarian of these guidelines of several growth periods was studied. At the same time the methods of measuring the activity of these guidelines was be studied. From the result of experimentation on these guidelines in all the growth stages, we knew that these guidelines of the seedlings of all the series had the same variety orderliness just as the configuration and yield guidelines. This indicated that high physiology activity inside the seedling was the basis of well growth. The good relativity between the phy... |
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