以厚皮甜瓜鲁厚甜1号为试验材料,采用蛭石:草炭:烘干鸡粪为3:2:1有机基质配方,设4个施肥处理,对温室有机基质栽培甜瓜生理特性、产量和品质进行了研究。结果表明迫施适量化肥可有效提高甜瓜的光合速率和根系活力,可显著提高果实可溶性...以厚皮甜瓜鲁厚甜1号为试验材料,采用蛭石:草炭:烘干鸡粪为3:2:1有机基质配方,设4个施肥处理,对温室有机基质栽培甜瓜生理特性、产量和品质进行了研究。结果表明迫施适量化肥可有效提高甜瓜的光合速率和根系活力,可显著提高果实可溶性糖、可溶性蛋白含量和果实产量;施肥对甜瓜生长和果实维生素 C 含量影响不大;过量施用化肥会引起果实硝酸盐含量显著升高,糖度急剧下降,降低品质。本试验确定较佳施肥量计算方法为:春荐栽培,化肥施用量=(甜瓜目标产量需肥量-有机基质速效养分量)/化肥养分吸收率。秋茬栽培中,化肥施用量=(1.5倍甜瓜目标产量需肥量-有机基质速效养分量)/化肥养分吸收率。展开更多
A new method for mimic biomineralization was used to synthesize CaCO 3 . The organized organic substrates, which could associate with Ca 2+ by means of molecular recognition and induce the nucleation and growth of CaC...A new method for mimic biomineralization was used to synthesize CaCO 3 . The organized organic substrates, which could associate with Ca 2+ by means of molecular recognition and induce the nucleation and growth of CaCO 3, were synthesized fristly, and followed by the preparation of the CaCO 3 by carbonation of a solution of Ca(OH) 2 with CO 2. Well dispersed spindle-like nano-CaCO 3 particles with an average width of 50 nm and a ratio of diameter to length about 1∶5 were obtained under the given experimental conditions. The products were characterized by FTIR spectra, TGA analysis and transmission electron microscope(TEM).展开更多
文摘以厚皮甜瓜鲁厚甜1号为试验材料,采用蛭石:草炭:烘干鸡粪为3:2:1有机基质配方,设4个施肥处理,对温室有机基质栽培甜瓜生理特性、产量和品质进行了研究。结果表明迫施适量化肥可有效提高甜瓜的光合速率和根系活力,可显著提高果实可溶性糖、可溶性蛋白含量和果实产量;施肥对甜瓜生长和果实维生素 C 含量影响不大;过量施用化肥会引起果实硝酸盐含量显著升高,糖度急剧下降,降低品质。本试验确定较佳施肥量计算方法为:春荐栽培,化肥施用量=(甜瓜目标产量需肥量-有机基质速效养分量)/化肥养分吸收率。秋茬栽培中,化肥施用量=(1.5倍甜瓜目标产量需肥量-有机基质速效养分量)/化肥养分吸收率。
文摘A new method for mimic biomineralization was used to synthesize CaCO 3 . The organized organic substrates, which could associate with Ca 2+ by means of molecular recognition and induce the nucleation and growth of CaCO 3, were synthesized fristly, and followed by the preparation of the CaCO 3 by carbonation of a solution of Ca(OH) 2 with CO 2. Well dispersed spindle-like nano-CaCO 3 particles with an average width of 50 nm and a ratio of diameter to length about 1∶5 were obtained under the given experimental conditions. The products were characterized by FTIR spectra, TGA analysis and transmission electron microscope(TEM).
