期刊论文

Profile Characteristics of Soil Properties and Water/Nitrogen Distribution in Paddy Fields with Different Cultivation Years

中文

土壤

0253-9829

2019

51

6

1188-1195

10.13758/j.cnki.tr.2019.06.020

41601215:国家自然科学基金 41771261:国家自然科学基金 2016CFA027:湖北省自然科学基金创新群体项目 CCNU16A05015:中央高校基本科研业务费专项华中师范大学项目 CCNU17TS0001:中央高校基本科研业务费专项华中师范大学项目

本校为第一机构

在江汉平原典型农业区选定不同水稻种植年限(2、18、>100 a)的稻田,采用野外调查与室内分析相结合的方法,量化不同稻田土壤剖面基本性质和水-氮分布特征,以揭示内在原因,探讨适宜不同水稻种植年限稻田的水-氮管理方式,为提高稻田水-氮利用率和减少稻田面源污染提供科学依据。结果表明:对于不同水稻种植年限农田,土壤剖面基本性质差异明显。耕作层和犁底层厚度随水稻种植年限的延长而增加;土壤有机质在耕作层富集,且随水稻种植年限的延长含量增加;耕作层土壤容重随水稻种植年限的延长而减小,犁底层土壤容重则增大;受耕作和淋溶条件的影响,犁底层和心土层的黏粒含量随水稻种植年限的延长而增加;饱...

In order to improve the water/nitrogen utilization efficiency and reduce the agricultural non-point source pollution, field investigation and lab analysis have been conducted to quantify the characteristics of water/nitrogen distribution and to explore the optimal irrigation and fertilizer schedules in paddy fields with different cultivation years (2 a, 18 a and >100 a) in the Jianghan Plain. The results showed that significant differences in soil properties were observed among the paddy fields. With the increase of paddy cultivation year, the thickness of plough layer and plow pan, bulk densi...