不同配比基质的理化性状及其对水稻机插秧苗素质的影响

Physicochemical Properties of Substrates with Different Mixing Ratios and Their Effects on Quality of Machine-transplanted Rice Seedlings

测定分析了草炭、椰子壳、谷壳灰、蛭石、粘土、有机肥不同配比的10种水稻机插秧基质和湖南湘晖公司提供的成品基质(CK)的理化性状,并研究了11种基质对水稻机插秧苗素质的影响。结果表明:T1、T2、T3、T4基质的理化性状适合培育水稻机插秧苗;不同配比的水稻机插秧基质影响秧苗的生长发育,以T1(草炭∶椰子壳∶谷壳灰∶蛭石∶粘土∶有机肥=10∶15∶10∶15∶40∶10)处理效果最好,主要表现为地上部叶宽、叶面积、茎基宽度的增加及地下部不定根长度、根体积的增加和发根能力增强,秧苗地上部和地下部鲜重和干重均高于其他处理。

The physicochemical properties of 10 substrates for machine-transplanted rice seedling,which mixed with different ratios of peat,coconut shells,rice husk ash,vermiculite,clay and organic fertilizer,and of the substrate product(CK) provided by Hunan Xianghui Company were analyzed.Moreover,the effects of the 11 substrates on quality of machine-transplanted rice seedlings were studied.The results showed that the physicochemical properties of T1,T2,T3 and T4 were suitable for cultivating machine-transplanted rice seedlings;different mixing ratios of substrates will influence the growth of machine-transplanted rice seedlings.Among all of the substrates,T1(peat: coconut shells: rice husk ash: vermiculite: clay: organic fertilizer=10: 15: 10: 15: 40: 10) had the best effect,which mainly showed in increase of leaf width,leaf area and width of the stem base and enhancement of underground adventitious root length,root volume and rooting capacity,and fresh weight and dry weight of aerial part or underground part of rice seedling were all higher than the others.