大麦与谷类科学2024，Vol.41Issue(1)：28-35,8.DOI:10.14069/j.cnki.32-1769/s.2024.01.005
江苏沿海滩涂垦区不同播种量对小麦产量的影响及小麦生长季土壤因子变化动态
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
摘要
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.关键词
沿海滩涂地区/不同播种量/土壤盐分动态/滩涂小麦产量Key words
Coastal tidal flat area/Different sowing amount/Soil salinity dynamics/Wheat yield in tidal flat分类
农业科技引用本文复制引用
韩继军,崔士友,张蛟,陈澎军,缪源卿,解君艳,许庆华,董军林,汤彬琪,邢锦城..江苏沿海滩涂垦区不同播种量对小麦产量的影响及小麦生长季土壤因子变化动态[J].大麦与谷类科学,2024,41(1):28-35,8.基金项目
南通市科技计划-基础研究项目(JC22022100) （JC22022100）
南通市科技计划-民生重点项目(MS22021040) （MS22021040）
江苏沿江地区农业科学研究所学科建设基金项目[YJXK(2021)102]. （2021）
