Mineral elements in Torreya grandis 'Merrillii' seeds and their forest soils
浙江省科学技术重大招标项目(021102537); 浙江省林业厅重点林业科技攻关项目(01A02)
- Received Date: 2006-02-17
- Rev Recd Date: 2006-04-21
- Publish Date: 2006-08-20
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Key words:
- pedology /
- Torreya grandis 'Merrillii' /
- soil fertility /
- heavy metal /
- mineral elements /
- fertilization
Abstract: Studies were carried out onmineral elements in Torreya grandis 'Merrillii' seeds and their forest soils . The results are the following .(1)In the soils , total nitrogen , total phosphorus and hydrolytic nitrogen are rich , while available potassium insufficient .Ferrum , boron , manganese are rich and coefficients of variation are small. Cadmium and hydragyrum are undetectable , coefficients of variation of arsenic , chromium , cuprum are big while those of zinc and plumbum small , and in some soil samples , the contents of arsenic , chromium, cuprum and plumbum exceed the standard .(2)In the seeds , nitrogen , phosphorus , potassium, calcium and magnesium are abundant and their coefficients of variation are under 16 %.Manganese , cuprum and zinc are plentiful , and the coefficients of variation are small , while those of ferrum and boron are between 147.69 % and 112.99 %, respectively .Among the heavy metals , cuprum , zinc and hydragerum contents are under the safe line , and plumbum and chromium are undetectable .Only arsenic content excesses the standard in some samples .(3)Of most mineral element contents , there are no correlations between the soils and the seeds , except those of calcium and ferrum and nitrogen .[ Ch , 8 tab .19 ref .]
Citation: | DAI Wen-sheng, LI Zhang-ju, CHENG Xiao-jian, YU Wei-wu, FU Qing-gong. Mineral elements in Torreya grandis 'Merrillii' seeds and their forest soils[J]. Journal of Zhejiang A&F University, 2006, 23(4): 393-399. |