Effects of farmyard manure and chemical fertilizer application rates on soil biology, cotton and fiber yield

• 全文链接

农家肥和化肥用量对土壤生物学及棉花和纤维产量的影响

关键词：

来源：

NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA

全文链接：

//agri.nais.net.cn/topic/downloadFile/0e848f56-5efc-4594-8ced-44c343e88c48

来源地址：

https://www.notulaebotanicae.ro/index.php/nbha/article/view/13838

资源所属：

棉花遗传育种

类型：

学术文献

语种：

英语

原文发布日期：

2024-07-01

摘要：

Organic and inorganic fertilizers have significant effect on plant physiology, yield per unit area, available plant nutrient contents and extracellular enzyme activities of soils. This study was carried out in field conditions in arid and semi-arid regions between 2020-2021 years, May 01. The effects of farmyard manure (FM) (20, 40, 60 Mg ha(-1)) and chemical (CF) (350 kg urea ha-1, 100, 200, 300 kg DAP ha(-1)) fertilizers applied at different rates on plant nutrient (N, P, K, Ca, Mg, Fe, Cu, Zn and Mn) contents, SPAD value and NDVI of cotton plants, seed cotton yield and soil enzymes (urease, catalase, dehydrogenase, alkaline phosphatase) were investigated. The results showed that FM applications significantly (p<0.01) increased the plant macro and micronutrients compared to CF applications, except for N (200 + 150 kg urea ha-1), Zn and Cu (300 kg DAP + 200 + 150 kg urea ha-1) in the 2021 cotton growing season. Mineralization of FM is slow under natural conditions; therefore, the use of FM alone is not sufficient to meet the nutrient needs of high yielding varieties. Urease and dehydrogenase activities increased significantly in FM treated soils compared to CF, while no significant (p<0.01) increase was recorded in alkaline phosphatase and catalase activities. Farmyard manure is a useful management practice for increasing soil biological activity. Physiological parameters of NDVI, SPAD and seed cotton yield significantly increased in FM treated soils compared to CF applications. The increase in cotton yield was 29.15%, in NDVI value was 22.38% and in SPAD value was 121.7%. The main issues with cotton in the area are the low organic carbon content of the soils, high clay content, arid and semi-arid soils, and their detrimental impact on the uptake of particular nutrients (N, P and B).