不同套餐肥对花生农艺性状和产量的影响

Effects of Different Set Fertilizers on Agronomic Characters and Yield of Peanut

为探讨不同套餐肥对花生叶片叶绿素相对含量(SPAD值)、农艺性状和产量的影响,在2个试验点A、B开展了大田试验。试验共设高产套餐肥(T_(1))、营养套餐肥(T_(2))、经济套餐肥(T_(3))和常规用肥(T_(4))等4个处理,测定了不同生育时期的叶片SPAD值、株高、分枝数,以及下针数、结果数和成熟期荚果产量及其构成因素。结果表明:施用套餐肥能够增大试验点A在开花下针期和膨果期及试验点B在开花下针期花生叶片的SPAD值;施用套餐肥能够提高试验点B的花生株高以及2个试验点的花生分枝数、下针数、结果数和荚果产量;相关性分析表明,下针数与荚果产量达显著正相关,2个试验点T_(1)处理的下针数比T_(4)处理的分别提高18.97%、5.66%,荚果产量分别提高41.33%、42.68%。在2个试验点推广高产套餐肥可提高下针数,达到花生增产的目的。

In order to explore the effects of different set fertilizers on the relative chlorophyll content(SPAD value)in peanut leaves,agronomic characters and yield of peanut,field experiments are conducted at two testing sites A and B.A total of four treatments including high yield set fertilizer(T_(1)),nutrition set fertilizer(T_(2)),economic set fertilizer(T_(3))and conventional fertilizer(T_(4))are set up in the experiment.The leaf SPAD value,plant height and branch number at different growth stages are measured.The peg number,fruit number,are measured at seedling stage,flowering-needle setting stage and fruit expanding stage.The pod yield and its components in mature stage are measured as well.The results show that the SPAD values of the leaves of test point A at the flowering peg stage and fruit enlargement stage as well as test point B at the flowering peg stage can be increased by the set fertilizers.The peanut plant height of test site B and the number of branches,pegs,fruits and pod yield of peanut in two test sites can be increased by the set fertilizers.The correlation analysis show that the number of pegs is significantly positively correlated with the pod yield.The number of pegs in T_(1) treatment is 18.97%and 5.66%higher than that in T_(4) treatment,and the pod yield is 41.33%and 42.68%higher in two experimental sites.The purpose of increasing peanut yield can be achieved by popularizing high yield set fertilizer and increasing the number of pegs in two experimental sites.