周兴旺
发表于 2025-3-28 18:29:01
Use of ,N labelled ammonium sulphate and ,N-labelled urea as a source for labelling , with ,N, technique often had a higher %N than unlabelled . grown in field nurseries with soil-water culture. Also, at the Research Co-ordination Meeting held in December 1984 in Vienna, evidence was presented that urea could inhibit the growth of .. Furthermore, the cost of .N in the chemical form of urea is 2–3 times higher than as ammonium sulphate.
KEGEL
发表于 2025-3-28 20:51:36
Summary and conclusions,United States of America, have collaborated in this 5-year programme. The main goals were to (a) quantify the amount of N. fixed by the . symbiosis, (b) evaluate . as an N source for rice production, and (c) to develop management techniques to integrate . into sustainable rice cropping systems while maintaining high yields.
违法事实
发表于 2025-3-29 00:21:47
https://doi.org/10.1007/978-94-011-1681-7Ammonium; FAO; algae; cyclin; nitrogen; pollution; soil; wheat
Apraxia
发表于 2025-3-29 05:49:13
978-94-010-4735-7Kluwer Academic Publishers 1993
GIBE
发表于 2025-3-29 09:12:49
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FIR
发表于 2025-3-29 15:22:54
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伪书
发表于 2025-3-29 17:28:39
Microtechnology and MEMShttp://image.papertrans.cn/t/image/882328.jpg
COLIC
发表于 2025-3-29 21:39:42
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