不同浓度羧甲基壳聚糖对水稻氮代谢影响研究

为了解羧甲基壳聚糖对水稻氮代谢的影响,采用盆栽试验研究了不同浓度羧甲基壳聚糖对水稻氮代谢,子粒、糙米的全氮、蛋白氮含量,子粒蛋白质产量的影响。结果表明,喷施羧甲基壳聚糖适宜浓度,水稻生殖生长后期功能叶和茎鞘中氮素转运能力比对照强,氮代谢关键酶活性比对照高;糙米中全氮和蛋白氮含量也高于对照。子粒蛋白质产量以0.5%的羧甲基壳聚糖处理最高,比对照增产19.8%。本试验条件下,以羧甲基壳聚糖0.5%浓度处理效果最好,0.25%浓度处理效果次之。

Effect of carboxymethyl chitosan on nitrogen metabolism of rice

The effects of different concentrations of carboxymethyl chitosan on rice nitrogen metabolism,grain and brown rice protein contents and grain protein yield were studied.The results showed that applying carboxymethyl chitosan could strongly improve the abilities of transportation of N in functional leaves and stem-sheaths of rice and key enzyme activities of nitrogen metabolism and contents of total N and protein N in brown of rice comparing to CK.Applying 0.5% concentration of carboxymethyl chitosan resulted in the highest rice grain protein and which was 19.8% higher comparing to CK.Therefore,0.5% carboxymethyl chitosan was recommended for rice production.