ECONOMIC-IMPLICATIONS OF SILVIPASTURES ON SOUTHERN PINE PLANTATIONS

被引：28

作者：

CLASON, TR

机构：

[1] Louisiana Agricultural Experiment Station, Hill Farm Research Station, Louisiana State University Agricultural Center, Homer, 71040-9604, LA

来源：

AGROFORESTRY SYSTEMS | 1995年 / 29卷 / 03期

关键词：

FORAGE INTERCROPPING; TIMBER PASTURES; AGROFORESTRY; LOBLOLLY PINE; BAHIAGRASS; COASTAL BERMUDAGRASS;

D O I：

10.1007/BF00704870

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

In 1984, five silvipasture treatments of native grasses (NG), Au-Lo-Tan lespedeza (L), bahiagrass (B), common bermudagrass (CM), and Coastal bermudagrass (CB), were established in a thinned 20-year-old loblolly pine plantation. Pine growth data were collected in 1984, 1987, and 1989. From 1986 to 1988, annual forage production was evaluated at 21-day intervals from April to October with forage dry matter yield and quality determined for each sampling interval. Forage management improved timber production with 5-year lumber growth on the NG, B, CM, and CB treatments exceeding the untreated plantation by 5.4 m(3) ha(-1). Forage protein content, IVDMD, and P levels did not differ among treatments but daily dry matter yield did (p = 0.05). Mean 3-year daily dry matter yields were 7.4, 5.9, 12.3, 8.3, and 18.5 kg ha(-1) for NG, L, B, CM, and CB. Financial comparison of a CB open pasture with a CB silvipasture showed that the silvipasture internal rate of return exceeded the CB open pasture by 7.3%. A loblolly pine-forage intercropping system is a suitable management option for maturing plantations.

引用

页码：227 / 238

页数：12

共 6 条

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