کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11024955 | 1701051 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Plastic film mulch promotes high alfalfa production with phosphorus-saving and low risk of soil nitrogen loss
ترجمه فارسی عنوان
مالچ پلاستیک فیلم تولید یونجه بالا را با صرفه جویی در فسفر و خطر کم شدن از دست دادن نیتروژن خاک ترویج می کند
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کلمات کلیدی
در دسترس بودن خاک نیتروژن، نسبت نیتروژن / فسفر را شلیک کنید گرفتن جذب نیتروژن، نسبت کربن / نیتروژن زیست توده میکروبی، کانی سازی کربن آلی خاک،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
چکیده انگلیسی
Plastic film mulch and phosphorus (P) fertilization usually increase alfalfa (Medicago sativa L.) forage yield in semi-arid regions by improving soil moisture and P availability. However, this does not always occur. The present study explored the P level for highest forage yield under film mulch and the mechanism underlying yield decrease at high P levels. A six-year study was conducted with randomized blocks of split-plot design with and without plastic film mulch as main plots: M0, no film mulch with flat planting; and M1, film mulching with ridge-furrow field regimes. Four P rates were applied in sub-plots: P0, P1, P2 and P3 with 0, 9.73, 19.3 and 28.9âkg P ha-1, respectively. Film mulch greatly increased forage yield, resulting in 14% higher yield in M1P0 than in M0P3. Forage yield under mulching decreased for 19.3 and 28.9âkgâPâhaâ1. The P rate for maximum yield was 16.1âkgâPâhaâ1. Soil total nitrogen (N) and inorganic-N decreased at 19.3 and 28.9âkgâPâhaâ1 with mulching compared with 9.73âkgâPâhaâ1, and the latter was about 90% lower than that of alfalfa lands in semi-humid region. Soil microbial biomass carbon (C) and C/N ratio in microbial biomass in mulched P2 and P3 subplots were significantly lower than for P1. With mulching, soil organic C mineralization was significantly less for P3 than for P1 and P2. Shoot N/P ratio decreased with increasing P with mulching. Thus shoot N uptake for P2 and P3âmulched plots was associated with low soil N availability. It is concluded that the highest forage yield was obtained with mulching, P-saving and low risk of N loss on the semiarid Loess Plateau.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Field Crops Research - Volume 229, 1 December 2018, Pages 44-54
Journal: Field Crops Research - Volume 229, 1 December 2018, Pages 44-54
نویسندگان
Yan-Jie Gu, Cheng-Long Han, Meng Kong, Xiao-Yan Shi, Pandi Zdruli, Feng-Min Li,