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cje ›› 2004, Vol. ›› Issue (4): 78-83.

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Dynamic of moving and population of grubs in different athletic area of golf course

MA Zongren1, CHANG Xiangqian2   

  1. 1. Golf College, Shenzhen University, Shenzhen, 518060, China;
    2. Mingshang Golf Course, Shenzhen, 518060, China
  • Received:2002-04-28 Revised:2002-11-02 Online:2004-08-10

Abstract: Dynamic of moving and population of grubs in 3 golf courses under subtropics according to different areas of golf courses was reported.The results showed that dynamic of moving and population of grubs in fairway and green of 3 golf courses was affected by dry and rainy season,topography(or areas) and maintaining level.Grubs population for highland (rough highland and high fairway) in rainy season (5~9 months) were about one fold of witch for same topography in dry season(1~4,10~12 months) and severalfold for depressed land (rough depressed land and depressed fairway) in rainy season,it was in the reverse for depressed land in rainy season.Grubs population in high maintaining areas(high fairway and depressed fairway) for dry and rainy season was individually lightly high which of rough areas.Grubs population in green except grubs population in greenⅠ,Ⅱbeing similar to fairway,being not differed obviously that grubs population in greenⅢ,Ⅳ areas,and few amount of grubs in greenⅢ,Ⅳareas.Amount of grubs greenⅠ,Ⅱ made up 90% of total grubs population.Grubs in green among 4 areas moved certainly,but this behaviour only occur in border upon areas.Moving rate of grubs in border upon areas for 3 days was 41.09%,zero for apart areas,moving behaviour of grub in border upon areas could be stopped by artificial obstacle.Lacquer mark and isolating tests showed that difference of grubs population among green 4 areas was result of grubs moving from out of greenⅠ.Grub in fairway during dry season mainly lived in 5~11 cm soil under ground,2~5 cm soil under ground for rainy season,among them,grub living in soil under ground for rough highland and short grass highfairway were relatively deep,grubs living in soil under ground for rough depressed land and short grass depressed fairway were relatively shallow.The anniversary average depth of grubs living in green soil was a half of fairway,grubs in green soil for anniversary lived in 0.3~7 cm,living nearly in surface of the earth for 9~10 months(0.3~1 cm).

Key words: Productivity, Crop-fruit ecological agriculture, Loess Plateau

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