不同缓释肥对茄子生长、产量及品质的影响

Effects of different slow-release fertilizers on growth,yield and quality of eggplants

采用盆栽试验方法,设置了不同释放期的缓释肥与普通肥料处理,研究不同缓释肥对茄子生长发育及产量、品质的影响。结果表明：在氮、磷、钾使用量相同的条件下,缓释肥与普通肥料处理在茄子的株高、茎粗上无明显差异,总叶绿素含量以释放期3-4个月的缓释肥处理增加幅度最大,且与释放期8-9个月的缓释肥均能显著提高茄子的根系活力。与其他施肥处理相比,释放期3-4个月的缓释肥可显著提高茄子Vc、可溶性糖、游离氨基酸的含量;而释放期8-9个月的缓释肥较其他处理极显著地降低了茄子硝酸盐含量,最低为196.3 mg·kg^-1。茄子单株产量、单果重均以释放期3-4个月的缓释肥处理最高。

The effects of different slow-release fertilizers with different release durations and ordinary fertilizer treatments on eggplants＇ growth,yield and quality were studied by pot experiment. The results showed that： in condition of the same N,P,K application rates,the plant height,stem diameter showed no obvious difference in slow-release fertilizer and ordinary fertilizer treatments,total chlorophyll content increased most in the slow-release fertilizer treatment with 3- 4 months release duration. The root vigor of eggplant both in slow-release fertilizer treatments with 3-4 and 8- 9 months release durations were enhanced significantly. Compared with other treatments,the content of Vc,soluble sugar and free amino acids were increased in the slow-release fertilizer treatment with 3- 4 months release duration. Additionally,the nitrate content of eggplant was significantly reduced in the slow-release fertilizer treatment with release durations of 8- 9 months,and the lowest content was 196. 3 mg·kg^- 1. The eggplants＇ yield per plant and single fruit weight were the highest in slow-release fertilizer treatment with release durations of 3- 4months.