The growth and yield of tomatoes in greenhouses covered by heat insulation film were investigated in Ishigaki, a subtropical area of Japan with high temperature and high solar radiation. High-density planting of tomatoes was carried out in June, July, August, October, and November, with a low node-order pinching system. The plants were grown in two greenhouses, one covered by a thermal barrier film (TBF) for heat insulation and the other covered by a polyolefin film (PO). Under TBF, the maximum temperature was up to 3.6°C lower than that under PO, and the mean temperature was 0.4°C lower. The leaf area index (LAI) of the June planting was 3.0 under TBF and 3.4 under PO, significantly lower than the LAIs of the other plantings, which ranged from 3.9 to 5.4. The specific leaf area (SLA) varied with the cultivation season, with that under TBF and PO being highest in November plantings grown in winter. SLA under TBF was higher than that under PO in the same cultivation seasons. The amount of total aboveground dry matter was significantly lower in the June planting under TBF and showed no difference in other plantings. Distribution to fruit was higher under TBF than under PO, especially in summer cultivation. The yields under TBF were significantly higher than those under PO in the July planting, and the yields under PO were significantly higher in the November planting. Under TBF, the rate of fruit cracking was reduced in the June, July, and August plantings. Under TBF and PO, plantings in October and November produced puffy fruits. The light use efficiency under TBF was higher than that under PO in the same cultivation seasons, apart from the June planting. Tomato cultivation under TBF reduced the damage from intense solar radiation during summer. TBF enabled penetration of sufficient solar radiation to distribute photosynthates to each part of the plant because of a limited sink and abundant solar radiation in a subtropical summer. These results indicate that TBF and sink-limited cultivation are effective systems for use in the high temperature and high solar radiation environments of tropical and subtropical regions.

以日本亚热带地区石垣市为研究对象，在高温、高太阳辐射的日本亚热带地区进行了隔热膜覆盖温室番茄的生长和产量调查。番茄高密度种植在6、7、8、10、11月份进行，节序捏制低。这些植物生长在两个温室中，一个用隔热薄膜 (TBF) 覆盖，另一个用聚烯烃薄膜 (PO) 覆盖。在TBF下，最高温度比PO下低3.6℃，平均温度低0.4℃。6月份种植的叶面积指数（LAI）在TBF下为3.0，在PO下为3.4，显着低于其他种植的LAI，范围为3.9至5.4。比叶面积（SLA）随栽培季节变化，在 TBF 和 PO 条件下，冬季种植的 11 月种植中的​​含量最高。同一栽培季节，TBF下的SLA高于PO下的SLA。TBF 条件下 6 月份种植的地上干物质总量显着降低，与其他种植没有差异。TBF 下果实的分布高于 PO 下，尤其是在夏季栽培。7月播种TBF下产量显着高于PO下，11月播种PO下产量显着增加。在 TBF 条件下，6、7 和 8 月种植的果实开裂率降低。在 TBF 和 PO 下，10 月和 11 月的种植产生了蓬松的果实。除6月份种植外，在相同栽培季节，TBF下的光利用效率高于PO下。TBF 下的番茄栽培减少了夏季强烈太阳辐射的损害。由于在亚热带夏季有限的汇和丰富的太阳辐射，TBF 能够渗透足够的太阳辐射，以将光合产物分配到植物的每个部分。这些结果表明，TBF 和汇限制栽培是在热带和亚热带地区的高温和高太阳辐射环境中使用的有效系统。