大麦与谷类科学

为探明蔬菜废弃物液体有机肥的合理使用量及对小麦产量的影响,对其肥效进行了研究。结果表明,随着施用有机肥量的增加,小麦分蘖数也不断增加,且均大于对照。当施用有机肥的量达到2 000 kg/667 m2时,1 m2小麦分蘖数为540.0穗,极显著高于对照64.8穗(P<0.01);以有机肥2 000 kg/667 m2处理和有机肥2 000 kg/667 m2与尿素及N-P2O5-K2O复合肥复合处理的小麦平均穗长分别为8.58、8.70 cm,极显著长于对照7.98 cm(P<0.01),且穗长小于7 cm的麦穗数占调查小麦总数的比例分别为0.00%、2.33%,极显著小于对照的16.67%(P<0.01)。有机肥试验区随着施肥量的增加,其千粒质量逐渐增加,且均高于对照。

The current study was aimed to determine the optimal application rate of a liquid organic fertilizer derived from vegetable waste and evaluate its effect on wheat yield. A field experiment was carried out in a village of Changshu City,involving six treatments and a control in which plants were supplied only with urea and compound fertilizer,but not with the liquid organic fertilizer. Results showed that the number of wheat tillers rose with increasing application rate of the liquid organic fertilizer,and all of the six treatments had greater tiller numbers than the control. When the liquid organic fertilizer was applied at 2000 kg /667 m2,tiller number per m2 reached 540. 0 spikes,higher than that in the control of 64. 8 spike; this difference reached a very significant level( P < 0. 01). In Treatment 5( the organic fertilizer 2000 kg /667 m2) and Treatment 6( the organic fertilizer 2000 kg /667 m2 in combination with urea and compound fertilizer),the average spike lengths were 8. 58 cm and 8. 70 cm,respectively; they were significantly( P < 0. 01)higher than that of the control( 7. 98 cm). Furthermore,the spikes less than 7 cm in length in Treatments 5 and 6 only accounted for0. 00% and 2. 33%,respectively,which were very significantly( P < 0. 01) lower than that in the control( 16. 67%). In Treatments1,3,and 5,in which the organic fertilizer was applied at 600,1000,and 2000 kg /667 m2,respectively,thousand grain weight climbed with increasing application rate of the organic fertilizer; and in this parameter Treatments 3 and 5 were significantly( P < 0.05) and very significantly( P < 0. 01) greater than the control,respectively.