不同缓控释肥用量对黑膜覆盖玉米产量的影响

Effects of Different Controlled-release Fertilizer Rates on Yield of Maize under Black Plastic Film Mulching Conditions

为明确黑色薄膜覆盖栽培下玉米获得高产的缓控释肥的适宜施用量,采用5个不同缓控释肥施用量的田间试验,进行玉米产量及植株性状的比较研究。结果表明:玉米产量随着缓控释肥施用量的增加呈先增加后降低的变化,以缓控释肥施用量60kg/667m2的产量最高643.66kg/667m2,增产7.9%,增产达显著或极显著水平。株高、穗位高均随着缓控释肥施用量的增加而增加,穗行数、穗粒数和穗粒重均随着缓控释肥施用量的增加呈先增加后降低的变化,其余的6个性状变化小。

In order to explore the appropriate rate of controlled--release fertilizer to obtain high yielding of maize under black plastic film mulching conditions, 5 different controlled--release fertilizer rates were applied to study the yield and agronomic traits of maize. The results showed that the yield trends increase at beginning and decline down after a certain rate, application of 60kg/667m2 obtained the highest yield, yielded 643.66kg/667m2 , increased 7.9 %, it＇s significantly increased the yield. Height of plant and cornjob height increased with the increase of fertilization rates, rows per ear, grains per ear and grain weight increased at beginning and decline down after a certain rate, difference of left 6 traits were not obviously.