Spectral reflectance of Brassica species under different environments.

摘要

In a field trial in 1996/97 in Hisar, Haryana, India, Brassica juncea cv. Laxmi, B. carinata cv. HC-2, B. napus cv. GSH-2 and B. campestris cv. BSH-1 were sown on 30 September, 20 October or 10 November in N.-S. rows. Reflectance of visible bands was highest in B. napus, because of its waxy leaves, and lowest in B. carinata. Reflectance of the near-infrared band was greatest in B. juncea and lowest in B. campestris. This was because infrared reflectance is directly related to biomass production, which was highest in B. juncea. Reflectance of visible and infrared radiation was greatest with sowing in October, followed by September.