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生态学杂志 ›› 1992, Vol. ›› Issue (6): 25-28,33.

• 研究报告 • 上一篇    下一篇

川西盆周丘陵地区油菜作物生态效应的初步探讨

李洪全, 曾守鲁   

  1. 四川省名山县农业局, 625100
  • 收稿日期:1990-12-04 修回日期:1991-05-04 出版日期:1992-12-10

Agroecological Effects of Rape Crops in Mountainous Areas of Western Sichuan Basin

Li Hongquan, Zeng shoulu   

  1. Agricultural Bureau of Mingshan County, Sichuan Province 625100
  • Received:1990-12-04 Revised:1991-05-04 Online:1992-12-10

Abstract: Based on climatic and agricultural data and with Kassam's method of agroecological divisioning, the potential productivity of rape crops at different ecological zones in mountainous regions of western Sichuan Basin are calculated. Integrated regression equations of light, temperature, water and rape yield are computerized, and affected coefficients of ecological factors on rape yield are calculated. It shows that the potential productivity of rape crops in these regions is 2.7-4.0 times higher than practical yield, and the affected coefficients of temperature and precipitation are significant. Low temperature and cloudy and rainy weather in early spring are also important limiting factors to rape yield. Measures for popularizing intermediate and late mature fine breeds of rape crops are put forward and have been verified by practical truth.