论文部分内容阅读
一、蔬菜作物产量的含义农作物的产量有多方面的含义,有单株的产量,有单位面积的产量;有經济的产量,有生物的产量;有单季产量及全年产量。在多次結果或多次采收的蔬菜来讲,还有早期产量及后期产量。但主要的是取得高額的单位面积总产量,也就是群体的产量。一般所称的“产量”,是指有食用价值的产品而言。在蔬菜作物中如叶球、綠叶、嫩茎、块茎、块根、果实、种子以及花球等,这些产量可称为“經济产量”。而在作物的生活过程中所合成的有机物質的总量,包括經济的产量及非經济的(卽不作食用的)产量,可称为“生物产量”。經济产量与生物产量,有时是一致的,但在大多数情况下是不一致的。如菠菜、芥菜、不結球白菜、茼蒿、莧菜等,它們的生物产量,除了根部以外,差不多就是經济的产量;而茄类、瓜类、豆类等蔬菜,則經济产量只是生物产量的一部分。
First, the meaning of vegetable crop yield Crop yield has many meanings, there are single plant output, yield per unit area; economic output, biological output; a single crop and the annual output. In many results or multiple harvest vegetables, as well as early production and later production. But the main thing is to achieve a high total output per unit area, which is the output of the group. The so-called “yield” refers to the value of the product. In vegetable crops such as leaf balls, green leaves, tender stems, tubers, roots, fruits, seeds and flower balls, these yields can be called “economic output.” The total amount of organic matter synthesized during the life of a crop, including economic output and non-economic output (not consumed), may be referred to as “biological production.” Economic output is sometimes consistent with biological production, but in most cases it is inconsistent. Such as spinach, mustard, non-heading Chinese cabbage, chive, amaranth, etc. Their biological yield is almost the same as their economic output except for their roots; while vegetables such as eggplant, melons and beans are only part of their biological output.