Meteoro-ecological basis of rice chalkiness formation

Abstract

Abstract: On the basis of field experiments with 19 rice rarities and various sowing dates in 13 places of whole country, meteoro-ecological basis of rice chalkiness formation is analysed in this paper. Results show that mean daily temperature in 15 days after rice full heading is the main factor affecting rice chalkiness. According to dynamic analysis of relationship between rice chalkiness and mean daily temperature in 15 days after full heading, it is known that rice chalkiness increases with raising temperature, the turn point being about 29℃(some difference among varities), and when the temperature closes to or exceeds 29℃, the chalkiness will be increased suddenly.

Key words: Rice, Chalkiness formation, Meteorologic ecology

Jia Zhikuan, Gao Rusong, Zhang Songwu. Meteoro-ecological basis of rice chalkiness formation[J]. Chinese Journal of Applied Ecology, 1992, 3(4): 321-326.

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Meteoro-ecological basis of rice chalkiness formation

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