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本文报导了对板栗(Castaneamollissima,Bl.)部分光合特性的研究。结果表明,板栗是C_3植物,具有CO_2猝发现象,依品种不同,CO_2补偿点40×10~(-6)~58×10~(-6),光呼吸速率为2.56~5.26mgCO_2·dm~-(2)·h~(-1);光补偿点为0.8~1.5KIX,光饱和点35~45KLX,光-光合关系也因品种不同而异:金沙油粟、台江大板栗和镇远大板栗为双曲线,而玉屏大板栗为对数函数,浅刺薄壳的光-光合关系更为Pn=1.2909(1-1.5000)e~(-0.0227I+0.0341),“滞后期”的长短与品种原产地有关,在15~30分钟之间,同化室气体流量、叶龄、叶位对板栗光合强度有一定影响。作者还根据板栗光合特性,对生产上存在的一些技术性问题提出了自己的观点。
This paper reports the study on the photosynthetic characteristics of some parts of Castaneamollissima (Bl.). The results showed that the chestnut was a C_3 plant with a CO_2 burst phenomenon. According to different varieties, the CO2 compensation point was 40 × 10 -6 ~ 58 × 10 -6, and the photorespiration rate was 2.56 ~ 5.26 mgCO 2 · dm ~ - (2) · h ~ (-1). The light compensation point is 0.8 ~ 1.5KIX and the light saturation point is 35 ~ 45KLX. The light-photosynthesis relationship also varies with different varieties: The results showed that the light-photosynthesis of the shallow prickly shell was Pn = 1.2909 (1-1.5000) e ~ (-0.0227I + 0). 0341). The length of “lag period” was related to the origin of varieties. Between 15 and 30 minutes, the air flow rate, leaf age and leaf position of the assimilation chamber had some effects on the photosynthetic intensity of chestnut. Based on the photosynthetic characteristics of chestnut, the author also put forward his own views on some technical problems in production.