Effects of Tillage Methods on Photosynthetic Rate of Different Genotypes of Wheat

doi:10.7668/hbnxb.20191006

Abstract

Abstract: The purpose of this paper was to study the effects of different wheat varieties and different farming treatments on the light distribution characteristics of wheat population.Four different genotype wheat varieties:experiment with two large and medium panicle type in Tainong 18 and Shannong 24, two multiple panicle type in Jimai 23 and Jimai 44, comparative study the no-till seeding(Less-tillage sowing, LT) and conventional tillage seeding(Ploughing sowing, PS) on wheat group light intensity and the influence of wheat leaf net photosynthetic rate.Compared with PS treatment, LT treatment significantly improved the light distribution in the multiple panicle wheat population, and significantly increased the illumination amount and photosynthetic rate of the lower and middle leaves. The canopy temperature of Jimai 23 and Jimai 44 populations sown less no-tillage was significantly lower than that of ploughing sowing, but there was no significant difference between Tainong 18 and Shannong 24 under the two farming treatments. Less-tillage sowing significantly improved the vegetation normalization index(NDVI) of middle and large panicle wheat variety Shannong 24, in the middle and late growth period, and gave full play to the advantage of photosynthetic production in the late stage of wheat population. The Less-tillage sowing cultivation method significantly improved the yield of the multiple panicle type Jimai 23 and Jimai 44. Less-tillage sowing significantly improved the light distribution characteristics of wheat population, and it was more likely to increase yield than ploughing sowing. The multiple panicle type varieties with high tiller panicle rate and relatively large population were more likely to play the cost-saving and synergistic effect of Less-tillage sowing treatments.

Key words: Wheat, Less no-till, Light distribution, Photosynthetic rate

CLC Number:

LI Shengdong, HAN Wei, WANG Dan, BI Xiangjun, WANG Zongshuai, FENG Bo, WANG Xuqing, LI Huawei, SI Jisheng, WANG Fahong. Effects of Tillage Methods on Photosynthetic Rate of Different Genotypes of Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2021, 36(1): 102-107. doi: 10.7668/hbnxb.20191006.

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