Study on Influence of Different Sowing Amount on Wheat Yield and Variation of Soil Factors in Wheat Season in Coastal Reclamation Area of Jiangsu Province
HAN Jijun
ZHANG Jiao
CHEN Pengjun
MIAO Yuanqing
XIE Junyan
XU Qinghua
DONG Junlin
TANG Binqi
XING Jincheng
CUI Shiyou
Abstract：To study the effects of different sowing amount on wheat yield and its constituent factors and clarify the dynamic changes of soil salinity,pH value,soil moisture and soil temperature during the growth of coastal wheat,the wheat planting experiments of three sowing rate levels were carried out with Yangmai 16 as the test variety in the coastal shoal reclamation area of Nantong City,Jiangsu Province.The results showed that:(1)During the process of wheat planting in coastal shoals,the soil salinity(electric conductivity)of 0～20 cm and 20～40 cm were 0.258～0.478 dS/m and 0.258～0.496 dS/m,respectively,and the soil salinity of each treatment was stable from December to the end of March of the next year,and the soil salinity began to appear in early April.(2)Soil pH value and soil moisture under different seeding treatments had consistent seasonal variation characteristics,and the variation ranges of soil pH value of 0～20 cm and 20～40 cm under each treatment were 7.80～8.55 and 8.52～9.37,respectively.Under each treatment,the variation ranges of 0～20 cm and 20～40 cm soil water were 19.35％～24.13％and 21.51％～23.66％,respectively.(3)The soil layer temperature(at the depth of 0 cm,5 cm,10 cm and 15 cm)and atmospheric temperature showed similar seasonal changes under different seeding levels,and there was a significant positive correlation between soil layer temperature and atmospheric temperature(P＜0.01).(4)In the process of planting wheat in coastal beaches,wheat yield under D2 and D3 treatments was significantly increased by 5.74％and 5.06％(P＜0.05)compared with D1treatments,and the panicle number was significantly increased by 9.68％and 10.54％(P＜0.05),respectively,and there was no significant difference in the yield and panicle number between D2 and D3 treatments.At the same time,there was no significant difference in grain number per panicle and 1 000-grain weight among D1,D2 and D3 treatments.Therefore,under the conditions of this experiment,the dynamic changes of soil salinity and so on did not change significantly with different seeding levels during the planting process of tidal flat wheat,and the increase of the yield of tidal flat wheat was mainly caused by the increase of the panicle number.Considering the economic benefits,the sowing amount of 225.0 kg/hm2 was a more suitable level for tidal flat wheat.
Keywords：Coastal tidal flat areaDifferent sowing amountSoil salinity dynamicsWheat yield in tidal flat
Publication Date：2024-02-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 28-35 )