Study On The Fertilization Of Eucalyptus Special Fertilizer Organic-manure Of HA

Fertilization is indispensable technique measure which implantation Eucalyptus fast-prolifitcacy stands. In order to solve the problem which between trees fast-growing and soil fertility declination. Make use of livestock for the main organic material(inclusion little amount round flat cake, peat soil...etc.), adopting biologic to synthesize a conversion technique to produce small member HA(humic acid), according to function fertilizer type that the grow stage needs of the Eucalyptus tree's dissimilarity on this foundation, go together with to correspond just the right amount of of compound microorganism germ, N, P, K and in turn microelement fertilizer, dispense and produce HA series special fertilizer of Eucalyptus(2 types: the special basal fertilizer and the special fertilizer for superaddition fertilizer.Adopt a random rea set a design, with equipollence investment (fertilizer cost) of groovy fertilizer for comparison, carried out multiplace fertilization experiments. Analysis on fertilization effect and mechanism by the special fertilizer towards trees growth, soil fertility, some index signs of biochemical physiological, tree nourishments, resistance.. etc. That results showed, the formulation of special fertilizer is viable, The special fertilizer either in promoting tree growth and resistance or improving the soil fertility, improving structure of the tree nourishment and fertilizer efficiency durative, the adaptability, the stability, etc. various, all turn than the groovy fertilizer have obvious advantage. Concrete are as follows: (1) Compare with equipollence investment (fertilizer cost) of groovy fertilizer, uses series special fertilizer, the growth of stands were remarkably higher than normal fertilize processing, in 19 months, its tree high and DBH was respectively increasing 7.8%～51.8% and 9.8%～53.0%, the biologic productivity raising 30.2%～81.1%; (2)The HA (humic acid)series' special fertilizer of Eucalyptus can be capable of enhancing the anti-cold of trees, easing frozen damage degree, turning with normal regulation fertilization compare, the percentage of frozen damage, the average frozen damage class and index of frozen damage etc. was respectively descending 28.3%～43.5%, 37.75%～s50.49% and 36.42%～49.71%; (3)The HA special fertilizer of Eucalyptus can be obvious enhance soil fertility, improving rhizosphere soil microorganism flora constituting and amount. Throughing the measurement, after more than 2 years, compareding the this background numerical value of before forestation, the content of soil organic material, whole nitrogen, whole phosphorus, quick effective nitrogen, effective phosphorus and quick effective kalium etc. was respectively to raise 5.5～5.9%, 11.3～13.4%, 3.7～5.7%, 7.3～12.0%, 19.5～26.4% and 36.3～42.7%. Particularly, the content of soil effective phosphorus and quick effective kalium can be significant increment, the direction of soil acidification to be suppressed, the pH raises 0.2-0.3 units; Moreover, the microorganism constituting of rhizosphere soil was improved and the amount of microorganism was increased, reflecting HA to have bigger advantage in excavating potential soil organisms fertility and repressing nitrogen volatilization; (4)Using the HA special fertilizer of Eucalyptus can promote forest absorb nutrient, enhancing utilization efficiency of nourishment. Turn with normal regulations fertilization compare, increasing the accumulation rate of nourishment chemical element is 4.2%～32.2%, and the nourishment chemical element makes use of an efficiency to raise 14%～27%; (5)Using the HA special fertilizer of Eucalyptus can raise chlorophyll content obviously, enlarge a leaf area index, to build up tree vigor, benefiting in photosynthesis, exaltation yield. Turn HA special fertilizer with normal regulations to compare through the measurement, leaves chlorophyll content to raise 26.3%～94.2% , the leaf's area index raises 41.0%～s172.8%; (6)In fertilizer efficiency durative, the fertilizer efficiency of normal regulations fertilization when the tree 3 years was already basic disappearance. But the fertilizer efficiency of HA special fertilizer can keep on 4-5 years, maintainning a more long-playing nutrient supply. Moreover, studied on the special fertilizer dosage, putting forward afforesting that year feat dosage of the special fertilizer for: the basal fertilizer dosage is 1000 g/tree, superaddition fertilizer dosage is 646 g/tree. Furthermore Analysis the adaptability and stability of the HA special fertilizer.Based on a comprehensive analysis of fertilization efficiency, election the special basal fertilizer formulation of Eucalyptus is: OM≥30.0%, N+P₂O₅+K₂O≥6.0%(2.5-2-1.5), humic acid total amount≥8.0%, and plusing "green drop" compound microbial inoculum (use in with the basal fertilizer to press each 50 kgs: 1 kg); The special fertilizer formulation of superaddition fertilizer is: OM≥20.0%, N+P₂O₅+K₂O≥20.0%(9-8-3), humic acid total amount≥6.0%. The feat dosage of the special fertilizer in afforesting that year for the basal fertilizer dosage is 1000 g/tree, superaddition fertilizer dosage is 646 g/tree.