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Evaluation on Nutritional Values of Five Grass Species and Effect on Soil Fertility After Mulching in Pear Orchards(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2013年17期
Page:
188-192
Research Field:
Publishing date:

Info

Title:
Evaluation on Nutritional Values of Five Grass Species and Effect on Soil Fertility After Mulching in Pear Orchards
Author(s):
HUANG Xiong; ZHANG Jian-guang; ZHANG Yu-xing; TIAN Wen-wen
Pear Engineering and Technology Research Center of Hebei Province,College of Horticulture,Agricultural University of Hebei,Baoding,Hebei 071001
Keywords:
pear orchard; herbage; mulching; nutrition; soil fertility
PACS:
S 661.2
DOI:
-
Abstract:
The growth characteristics and nutritional value of five kinds of herbages (Poa annua L.,Festuca arundinacea Schreb.,Symphytum pezegrinum L.,Medicago sativa L.and Secale cereale)and changes of pH and nutrient element contents after mulching the ground were studied in pear orchards,in order to provide a basis of determining appropriate sod system.The results showed that the height of Secale cereal was the highest among five fresh herbages (145.00 cm);the ground coverage percentage of Poa annua L.was the largest (35.00%);the fresh and dry weights of Symphytum pezegrinum L.were the biggest(7.48 kg/m2 and 0.82 kg/m2,respectively);the highest content of organic carbon(540.86 g/kg) was found in Secale cereale,total nitrogen (54.42 g/kg) in Festuca arundinacea Schreb,total phosphorus (6.67 g/kg) in Medicago sativa L.and total potassium (30.35 g/kg) in Symphytum pezegrinum L..In comparison of total amount of annually accumulated nutrition,the content of organic carbon,total nitrogen,total phosphorus and total potassium of Symphytum pezegrinum L.were the highest (510.09,41.40,6.83,33.20 kg/667m2,respectively).After mulching the ground with herbages,the soil pH of all treatments decreased,the soil organic matter growth was the biggest with covering Symphytum pezegrinum L.(2.43 g/kg),the amount of total soil nitrogen,total phosphorus,available phosphorus and available potassium were the largest with covering Medicago sativa L.(0.14,0.05,18.90,328.32 mg/kg,respectively).The total soil potassium increment was the largest with covering Festuca arundinacea Schreb.(1.31 g/kg) and soil hydrolyzable nitrogen increment was the largest with covering Secale cereale(12.21 mg/kg).

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Last Update: 2014-08-12