Effects of Different Sowing Rates on the Agronomic Traits and Yields of Spring Wheat using Shallow Buried Drip Irrigation and Wide Range Uniform Sowing Technology
To study and screen the optimal sowing amount of spring wheat under shallow buried drip irrigation conditions in the Hexi region of Gansu Province,the effects of different sowing rates on wheat yield composition,agronomic traits,and yield were studied using Ningchun 4 as the experimental material.The results showed that under shallow buried drip irrigation condition,with the increase of planting density,the plant height of wheat increased,and the spike length and number of grains per spike both showed a trend of increasing first and then decreasing with the increase of sowing amount.The maximum spike length and number of grains per spike were 8.02 cm and 38.05 grains per spike,respectively under the sowing rate of 6.75 million grains/ha which also yielded higher 1000-grain weight of 39.4 g and the highest average yield of 8 175.0 kg/ha,which was significantly higher than other treatments.Based on comprehensive analysis,the recommended wheat sowing rate for the promotion of shallow buried drip irrigation and wide range uniform sowing technology in the Hexi region of Gansu is about 6.75 million grains/ha.
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