| Calcium is needed for peanut amounts of nutrients.Or poor southern red soil calcium is serious, serious effects to groundnut and quality.This article chooses six large, medium and small seed peanut varieties, by Ca and Ca is not applied two processing, with different grain type peanut in different periods of peanut vegetative organs and reproductive organs-essential nutrients and toxic element content in the soil and the analysis of the conversion, and discuss the influences of Ca element in peanut plant biomass and Ca element applied to plant-necessary nutrition elements in soil and poison interactions between the elements, so as to find the best fertilization conditions, optimizing the vegetative growth and reproductive growth of peanut, to reduce the peanut empty abortive, full fruit rate, peanut production effect.In this paper, the test results analysis:(1) Ca as the growth of the peanut period, the root of the biological accumulation have been reduced after the trend of increase, this may be associated with more nutrients necessary to late peanuts, Ca increased the root volume, for the supply of a large number of elements required at later stages of peanut conditions;Shi Ca also reduces the biological accumulation of peanut stalk and decrease the biological accumulation of small seeds, peanut stalk;And to reduce the size and the shape of different peanut leaf in different historical periods in biological accumulation;Ca can also add big shi, the seed of peanut pods biological accumulation.(2) in peanut seedling stage, each organ in Ca Ca group, N, P, K accumulation is slightly lower than without Ca group, the reason may be that:Ca reduces the peanuts above ground biomass, in two kinds of processing, applied to Ca group per plant biomass above ground less than not Ca group, two groups of peanut in seedling stage of plant absorption capacity is the same, but the Ca group plant biological accumulation showed less than without Ca group, showed that the plant nutrients accumulation Ca group is less than the Ca is not applied, explain peanuts in seedling nutrition absorption ability is weak;Fancy stitch, Ca application promote the Ca in the stem, the absorption of N, P, at the same time reduces the peanut root Ca, N, P, K accumulation and leaf accumulation of Ca, N, P, Ca, N and P are accumulated in peanut stalks, may be due to the applied Ca provide nutrients for peanut flowering.But shi Ca reduces the roots and stems of K, and K accumulation in leaves increased, this may be the Ca in K can adersely affect function, remains to be further research.Ca in podding stage, mature stage increased the pods of Ca, P, K accumulation, especially effective for large seeds, peanuts.(3) on the whole, calcium can promote the nut and nut in Ca matter accumulation, obviously promote the peanut leaves and nuts in N matter accumulation, promote accumulation of substance P, and inhibited the K accumulation, promoting the nut and nut iron accumulation in the operation, promote the nuts in the accumulation of manganese matter, after full fruiting, Ca application promote the copper matter accumulation in root, inhibits the copper nuts matter accumulation at the same time, at the podding stage to full fruiting, Ca application promote the peanut roots of zinc matter accumulation, leaf full fruit period to maturity, and applied the Ca inhibition of root, stem, fruit, nuts zinc matter accumulation.Podding stage to full fruiting, Ca application promote the accumulation of stem Ye Zhongmei matter, does not affect other periods.Seedling to fancy stitch, Ca promote mo matter accumulation in the leaves, full fruit period to maturity, the Ca application promote the accumulation of molybdenum in the nut and nut matter, podding stage to full fruiting, Ca application promote Co matter accumulation in the leaves, full fruit period to maturity, shi Ca inhibited the nuts in the Co matter accumulation, podding stage to full fruiting, Ca application promote Ni matter accumulation in the stem, and curb the Ni matter accumulation in roots and leaves, full fruit period to maturity, the Ca application promote Ni matter accumulation in the root and the nut, and inhibit the stems and nuts in Ni matter accumulation, however, two groups of treatment in the stems and Ni matter accumulation are the nuts is gained by accumulation.(4) South acid red loam peanut 4 kinds of toxic elements (pb), aluminum, chromium, cadmium content and relationship of calcium and its health risk evaluation results:soil environment quality standard (GB15618-1995) lead in 250 mg/kg of cadmium, chromium 150 mg/kg,0.3 mg/kg, the national food safety standards of food limited (GB2762-2012) in the lead contamination in 0.2 mg/kg of cadmium, chromium 1.0 mg/kg,1.0 mg/kg.On the basis of the above standard, in this paper, the results said four kinds of toxic elements in soil and plant content in addition to nuts in chrome, which was 100%, the rest is up to standard.And calcium can reduce seedling xiang shi 554 kinds of toxic elements content in soil;In addition, calcium to reduce the cadmium content in the plant effect is particularly significant;Mature, calcium can reduce lead, chromium, aluminum content in the soil, cadmium content differences between the two kinds of processing small;Calcium reduces the shi xiang 2008 lead, aluminum, cadmium content in the nuts, and reduces the chromium content in hunan 314 nuts, reduces the hunan spend 55 lead, aluminum content in the nuts, reduces the 4 nuts in the heavy chromium and cadmium content, at the same time reduce the cadmium content in hunan agriculture floret raw nuts and the blue mountains small lead, aluminum, chromium content in the seeds, nuts.And calcium can alleviate shi xiang flowers 4,314, in the blue mountains small seeds nuts in chromium poisoning., from the perspective of ecology and pathology of Ca inhibition of toxic elements on peanut poison to improve peanut growth and development environment, finally to increase. |
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