夏闲期种植不同绿肥作物对土壤养分及冬小麦产量的影响

张 春<sup>1; 2</sup>; 杨万忠<sup>1; 2</sup>; 韩清芳<sup>1; 2</sup>; 王 丹<sup>1; 2</sup>; 张 坤<sup>1; 2</sup>; 丁 静<sup>1; 2</sup>; 乔灵芝<sup>1; 2</sup>; 贾志宽<sup>1; 2</sup>

Effects on soil nutrient and yield of winter wheat of planting different green manures during summer fallow

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DOI：10.7606/j.issn.1000-7601.2014.02.011

Key Words: green manure summer fallow period soil nutrients winter wheat yield

Author Name	Affiliation
ZHANG Chun^1，2, YANG Wan-zhong^1，2, HAN Qing-fang^1，2, WANG Dan^1，2, ZHANG Kun^1，2, DING Jing^1，2, QIAO Ling-zhi^1，2, JIA Zhi-kuan^1，2	(1.农业部西北黄土高原作物生理生态与耕作重点实验室/西北农林科技大学中国旱区节水农业研究院，陕西杨凌 712100； 2.西北农林科技大学农学院，陕西杨凌 712100）

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Abstract:

〗In order to measure the effects of green manure cropping on soil fertilization and crop field in Guanzhong area, a field experiment, with bare fallow and no-tillage as control (CK), was conducted to study the effects of planting different green manures on the soil available nutrients and crop yield during summer fallow in Yangling of Shaanxi. Smooth vetch (Vicia villosa Rothvar), hairy vetch (Vicia villosa Roth), milk vetch (Astragalus sinicus) and sweet clover (Melilotus suaveolens Ledeb) were chosen as the green manure treatments. The results showed that the contents of soil Available P, Available K and Hydro-N were increased by planting green manures. The degree of increase was closely correlated with the nutrient content and biomass of the green manure crop. Compared with CK, the green manure treatments significantly affactedincrease ear number, kernel and 1000-kernl weight of per unit area of winter wheat, with the yield increased by 21.1%, 24.3%, 6.0%, and 11.6% for the four treatments of green manure crops, respectively.