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小麦穗肥做到氮、磷、钾配合施用,能明显增加每穗粒数,穗数、千粒重略有提高,具有显著的增产效果。氮、磷、钾配合施用比氮、钾或氮、磷配合施用增产5%左右,比单施氮肥增产101%。生理分析表明,氮磷钾配合施用能扩大群体冠层叶面积,延长叶片功能期,提高叶片质量和光合效率,增加开花后的物质积累。同时,明显增加基部1、2节间茎壁的厚度,增强植株抗倒能力。
Wheat spike fertilizer to do nitrogen, phosphorus and potassium with the application, can significantly increase the number of grains per spike, spikes, grain weight slightly increased, with significant yield-increasing effect. The application of N, P and K fertilizers increased about 5% compared with that of nitrogen, potassium or nitrogen and phosphorus, and increased by 101% than that of nitrogen and phosphorus alone. Physiological analysis showed that N, P and K could increase the population canopy leaf area, prolong the functional period of leaves, improve leaf quality and photosynthetic efficiency, and increase the accumulation of material after flowering. At the same time, the thickness of stem wall at the base of 1 and 2 was significantly increased, and the plant lodging resistance was enhanced.