论文部分内容阅读
该文对70年代以来国内外涉及农桐间作复合生态系统的研究报告总结如下:①泡桐是强阳性树种.由于具有根系分布深、树冠稀疏等特性,较适宜与农作物复合经营;②间作后由于系统具有减低风速和最高温的作用,因此有助于提高系统抵御灾害天气的能力,但对光的截留对提高系统内作物的产量有副效应;③间作前6a和6a后,适宜的间作密度分别为5m×20m和小于5m×30m,但该结论仍有争议,尚待进一步研究验证;④幼龄间作林营养补给的效果仍存在争议,但接干修枝的研究成果已被生产单位普遍接受;⑤在提高研究手段,完善研究方法的前提下,不同桐种叶面积指数变化规律、树冠对光的截留、光质、光量的时空变化规律、系统内农作物光能结合及系统效应评价方法等领域将是今后农桐复合经营系统研究的重点.
This paper summarizes the research reports of Agrotis fortunei complex ecosystem since the 1970s at home and abroad: ① Paulownia is a strong positive species. Due to its deep root distribution and sparse canopy, it is more suitable for compound management with crops. ②After intercropping, the system has the function of reducing the wind speed and the highest temperature, which helps to improve the system’s capability of resisting disastrous weather. However, (3) The intercropping density of 5 m × 20 m and less than 5 m × 30 m after the intercropping of 6 and 6 years ago is still controversial, and remains to be further verified; (4) The intercropping The effect of forest nutrient supply is still controversial, but the research results of the practice of picking dried stems have been generally accepted by the production units. (5) Under the premise of improving research methods and perfecting research methods, the change law of leaf area index, Interception, light quality, the temporal and spatial variation of light intensity, the system of crop photosynthesis and system effects evaluation methods and other fields will be the future focus of the study of agricultural business compound management system.