膜下滴灌条件下不同施肥配比对玉米生长发育、产量和品质的影响

Effects of Different Fertilizer Proportion on Growth, Yield and Quality of Corn with Fertigating by Drip Irrigation under Film

在沈阳地区大田中布设田间小区试验,研究了膜下滴灌条件下氮肥、磷肥和钾肥的不同配比模式对玉米(Zea mays L.)的生长发育、产量及品质的影响。试验设置了4种不同施肥配比和1个对照,观测了不同处理下玉米子粒的蛋白质、脂肪和淀粉含量以及玉米株高、叶面积指数、干物质积累、产量等指标。试验结果表明,覆膜条件下不同的氮磷钾施肥配比对玉米生长发育过程及产量的影响达到显著水平;覆膜条件下利用滴灌施肥,在施用相同基肥的条件下,氮肥、磷肥和钾肥配比(N∶P2O5∶K2O)为1.00∶0.50∶0.50时有利于提高玉米干物质积累,促进植株生长发育,显著提高产量和品质。

The effects of different fertilizer proportion of nitrogen, phosphate and potash fertilizer on the growth, yield and quality of corn with fertigation by drip irrigation under film was studied in Shenyang. 5 different fertilizer treatments including a comparison treatment were set. The contents of protein, fat and starch, and plant height, leaf area index, dry matter accu- mulation and yield of corn under different treatments were observed during the whole growth period of corn. The results showed that different NPK fertilization proportions with fertigating by drip irrigation under film had significant effect on the growth, quality and yield of corn. Under the same initial fertilizer condition, proportion of N,P and K was 1.00：0.50：0.50 was conducive to the improvement of dry matter accumulation, the growth of plants, quality and yield of corn.