Dwarf citrus trees are just like their normal counterparts, except that they have been grafted onto a special rootstock that causes them to remain compact. Washington Navel Oranges are the most popular backyard orange grown in Australia, producing oranges that ripen mid Winter. The fruit is medium to large in size, very sweet and juicy, relatively easy to peel and are seedless. This type of orange tree is suited to colder climates. The foliage it has is light to dark green and is glossy. Grows best in full sun or partial shade. They’re now available in a dwarf variety. This innovation allows you to grow citrus trees in small spaces, or grow several different varieties where you may only have room for one normal tree.

21世纪是农业发展的重要阶段，生命科学和其它**新科学技术相结合，将使世界农业发生根本性的变化。随着分子生物学的发展，生物基因库的建成，遗传工程的崛起，克隆技术和生物固氮技术的广泛应用，农业的面貌将为之一新。工业化农业的发展，以投入大量物质和能量为标志，促进了生产力的大幅度提高，但也带来了能源枯竭、环境污染和生态失调等严重的社会问题。来出现的新科学技术革命中，产生了一批新的技术群，如生物工程技术、新

Whether you eat grapefruit for breakfast or turn to it for a refreshing snack, this bittersweet-tasting citrus fruit is a staple in many American households. It belongs to the Rutaceae family, known f

Juicy, sweet and with minimal seeds, Afourer are one of the most popular varieties of mandarin. Afourer mandarins are easy to segment and easy to peel, making them perfect for school lunch boxes. Afourer was introduced into Australia relatively recently, in the early 2000s and has proven to be an enormously popular mandarin variety since then. Maturing mid to late season, they prefer a sub-tropical climate to grow, but will grow in most areas of Australia with proper care. Afourers are easily identifiable as they have a darker deep orange-red colour skin. Choose mandarins that are firm to slightly soft, heavy for their size and pebbly-skinned. Afourers are a good source of vitamin C and dietary fibre.