大棚番茄群体结构及光分布特性与中早期产量形成关系的研究

试验研究了大棚内不同栽培密度条件下的番茄群体结构特点(叶倾角、株形、叶容量、冠层叶面积密度)及光的分布特性(相对照度、光量子数、辐射量)与产量之间的关系。试验表明:大棚番茄高架栽培群体最适密度为5.56株/m²其中早期最高产量达5940kg/亩;最适宜生理指标为:冠层叶面积密度LAD0.942m²/m²,叶容量98.6片/m²。此冠层接受的辐射量为45.6％,光量子数40.3％,冠层的相对照度38.5％,群体消光系数1.04。

Study on the Forming Relationship Between the Tomato Population Structure and the Light Distribution Characteristic in the Plastic Sheet Shed and the Yield During the Middle-early Stage

This experiment studied the tomato population structure in the film greenhouse and its light distributon characteristic under the different density conditions. The results showed that the most suitable density of the tomato elevated culture in the plastic film greenhouse was 556 plants / m², and its spacing in the rows and row distance were 30 × 60cm. The highest yield of the tomato cultured under the above density during the middle-earty stage before August 10 was 5940kg / mu. Its most suitable physiological in dices were as follows. The leaf area density(LTD) of the coown layer was 0.942 m²/m². The leaf capacity was 98.6 pieces / m². The received radiation amoumt at the crown layer was 45.6% . The received photon amount at the crown layer was 40.3%. The relative light degree within the crown layer was 38.5%. The extinction coefficient of the population was 1.04.