板栗自交与异交后子房主要营养物质含量的变化规律

In order to verify the nutritional substances at reproductive development in chestnut, this paper using chestnut cultivar 'Yanshanzaofeng' as material from Qianxi county, regularly taking the ovaries after self- and -corss pollination. The changes of main nutritional substances in the ovary 0~50 day after pollination were determined by the soxhlet extraction, colorimetry, kjeldahl and atomic absorption method. The results were showed that the ovary of soluble sugars, starch and fat content were tested "slow - fast" trend upward, while the protein were radiate fluctuations. The content of N change was substantially "up - down - up - down "trend, P content was " down - up - down - up "trend-type fluctuations, K content change was " up - down "trend, B content change was " down - up - trend down "fluctuations. The results could be sprayed (N, P, K, B) fertilizer at the pollination and fertilization stage, which provided basic information for improving chestnut production.