Effects of Different N，P，K Ratios on Pectin，Chromium and Pentose Contents in Winter Squash（Cucurbita maxima Duch. ex Lam.）Fruits
JIANG Xin-mei1, NI Shu-jun2, YU Xi-hong1*
1College of Horticulture, Northeast Agricultural University; Key Laboratory of Cold Area Vegetable Biology, Heilongjiang Education Department, Harbin 150030, Heilongjiang, China; 2Heilongjiang Academy of Agricultural Sciences, Harbin 150069, Heilongjiang, China
Abstract：Effects of different N, P and K fertilizer levels on pectin, chromium and pentose contents in winter squash（Cucurbita maxima Duch. ex Lam.）fruits were studied in the experiment using cultivar‘Longyuanlixiang’. The results showed that the contents of pectin, pentaose and Cr3+ in winter squash fruits decreased significantly under every treatments of high N fertilizer level（carbamide 450 kg·hm-2）. Compared to CK（N1P1K1），the contents of 3 kinds decreased-sugar substance significantly increased under the treatment of only increasing K fertilizer level（N1P1K2）, the contents of Cr3+ and pentaose significantly increased under the treatment of only increasing P fertilizer level（N1P2K1）, the contents of Cr3+ increased under the treatment of increasing P and K fertilizer level（N1P2K2）. In order to increase pectin, pentaose and Cr3+ contents in winter squash fruits, as super-addition fertilizer, the treatment of N1P1K2 could be used in winter squash production.
蒋欣梅;倪淑君;于锡宏. NPK不同配比对笋瓜（印度南瓜）果实中铬（Cr3+）、果胶和戊糖含量的影响[J]. 中国蔬菜, 2010, 1(16): 38-41.
JIANG Xin-mei;NI Shu-jun;YU Xi-hong*. Effects of Different N，P，K Ratios on Pectin，Chromium and Pentose Contents in Winter Squash（Cucurbita maxima Duch. ex Lam.）Fruits. , 2010, 1(16): 38-41.
