论文部分内容阅读
通过田间试验,研究了复合包裹控释肥对小麦产量、光合特性、植株养分及土壤速效养分的影响。结果表明,复合控释肥较不施肥(CK)、氮磷钾配施(NPK)、复合肥(CF)及单一控释肥(CCRF)冬小麦中后期叶片净光合速率(Pn)和灌浆速率提高、灌浆持续时间延长、千粒重提高、穗粒数增加,但成穗数降低,产量构成因子协调,籽粒产量增加、蛋白质含量提高,分别较NKP和CF增产8.93%～16.05%和5.34%～12.23%;复合控释肥使土壤速效养分在冬小麦生长发育前中期相对较低后期较高,促进了干物质积累与转移,使植株干重和全氮全钾含量明显提高。复合控释肥中以WCRF效果最佳,使冬小麦籽粒产量、中后期叶片Pn、植株干重及全氮全钾均最高,养分释放更符合冬小麦需肥规律。
Field experiments were conducted to study the effects of compound controlled release fertilizers on wheat yield, photosynthetic characteristics, plant nutrients and soil available nutrients. The results showed that the net photosynthetic rate (Pn) and filling rate of mid-late leaves of composite controlled-release fertilizer were higher than those of CK, NPK, CF and CCRF, , The duration of grain filling prolonged, the grain weight increased, the number of grains per spike increased, but the number of spikes decreased, the yield components coordinated, the grain yield increased and the protein content increased, which increased by 8.93% ~ 16.05% and 5.34% ~ 12.23% The compound controlled-release fertilizers made the soil available nutrients have relatively low late-growth and early-maturing stages in winter wheat, promoted the accumulation and transfer of dry matter, and significantly increased plant dry weight and total nitrogen content. The WCRF was the best in the compound controlled release fertilizer, which made the grain yield of winter wheat, the leaf Pn, the dry weight of plant and the total nitrogen of the plant in the mid and late stage were the highest, and the release of nutrients was more in line with the law of fertilizer requirement of winter wheat.