公顷
种植
农林复合经营
农业
牧场
地理
作物
放牧
农业科学
农学
林业
生物
考古
出处
期刊:Proceedings of the Royal Society of London
日期:1967-02-21
卷期号:167 (1007): 145-154
被引量:1
标识
DOI:10.1098/rspb.1967.0020
摘要
A brief background of Indian agriculture, climate, crops and cropping patterns will help in understanding the problems of pests and diseases and their magnitude. The geographical area of India is 326-9 million hectares and about 78-45 million hectares are under forests and about 14 million hectares are under permanent pasture and grazing lands. The total cropped area is 156-7 million hectares, out of which 20-5 million hectares are sown more than once, leaving a net cultivated area of 136-2 million hectares. In addition, about 4-6 million hectares are put to miscellaneous tree crops and orchards.
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