花前夜间增温与不同施氮量对冬小麦产量和品质的影响
毕业论文关键词：夜间增温；不同施氮量；产量；籽粒品质；冬小麦
Effects of nighttime temperature increase and different nitrogen application rates on winter wheat yield and quality
Abstract：【Object】 In this paper,The effects of winter wheat on the growth of winter wheat and the change of grain yield were studied by simulating the main characteristics of global warming and asymmetric warming. The results showed that the winter wheat in Jianghuai area Future climate warming response to guide production.【Solution】(NT: Nighttime Treatment, open-type active warming device, the temperature is from sowing to flowering every day 18: 00-06: 00) and no temperature control (CK (CK)), : Control), a total of 2 temperature processing.【Result】 1. Soil temperature and moisture in the experimental area were 5 cm higher than that in the control group and the soil surface, the average temperature of the canopy and the canopy, and the soil water content decreased. 2. The increase of winter wheat yield, grain protein and its content, total starch content and amylopectin content were increased. 3. The yield and quality of winter wheat were significantly increased with the increase of nitrogen application rate, and the contents of total starch and amylopectin were significantly decreased. 【Conclusion】 1. Under the simulations of the opentime nighttime warming system, the accumulated temperature requirement of the winter wheat growth period was satisfied. The winter wheat yield was decreased and the grain yield of wheat was significantly affected by the temperature increase. 2.The application of nitrogen fertilizer could significantly improve the economic traits of wheat, increase the number of grains per spike, the number of effective spike, the 1000 - grain weight, and improve the yield and quality of wheat, but the total starch and amylopectin content decreased.
Key words: temperature at night; different nitrogen application rate; yield; grain quality; winter wheat
目录
摘要 1
关键词 1
Abstract 1
Key words 1
引言 2
1 材料与方法 3
1．1 试验地概况 3
1．2 试验处理 4
1. 3 试验材料 4
1. 4 测定项目及方法 4
1. 4. 1 土壤温度、水分的测定 4
1. 4. 2 产量构成因素的测定 4