Photosynthetic Rate and Water Utilization of Rainfed Wheat with Plastic Mulching on the Semiarid Loess Plateau, China
Photosynthetic Rate and Water Utilization of Rainfed Wheat with Plastic Mulching on the Semiarid Loess Plateau, China
复制标题
半干旱黄土高原地膜雨养小麦的光合速率和水分利用
DOI：
10.1007/s40011-018-1018-5
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发表时间：
2018-08
期刊：
影响因子：
--
通讯作者：
杨文雄
中科院分区：
文献类型：
--
作者：
柳娜;杨文雄
全田覆膜穴播是中国半干旱旱地小麦增产的一种创新方法。2012-2013年，作者在甘肃定西进行了为期两年的田间试验，试验分三个处理：(1)PMS，(2)覆膜穴播(PM)，(3)不覆膜穴播(CK)。与对照相比，0~60 cm土壤水分含量和0~25 cm土壤平均温度对土壤PM和PMS的影响较大。PMS花后耗水量显著增加，2012年分别比CK和PM高36.1和30.2 mm，2013年分别比CK和PM高24.8和23.4 mm。2013年(春季极端干旱)，拔节期和抽穗期的SPAD值和Pn值显著高于PM(P<； )，拔节期和抽穗期的SPAD值和Pn值分别增加了10.2和23.7%和7.70%和11.0%。PMS和PM的穗长、穗粒数和千粒重相似，但显著高于CK。与PM相比，PMS在2013年显著增加了产量(15.7%)和WUE(20.1%)。由此可见，水稻开花后的土壤水分供应明显改善，有利于产量的形成，因此认为旱作优于旱作。
Bunch sowing after whole-field plastic mulching with soil coverage (PMS) is a creative way to increase the wheat yield in semiarid rainfed areas of China. The authors conducted a two-year field experiment in Dingxi, Gansu, from 2012 to 2013, with three treatments of: (1) PMS, (2) bunch sowing after plastic mulching on the land surface (PM), and (3) direct bunch sowing without mulching (CK). Compared to CK, PM and PMS were affected by increasing soil water content in the early growth stage in the 0–60 cm profile, as well as average soil temperature in the 0–25 cm profile. Water consumption after flowering was significantly increased in PMS, which was higher than in CK and PM by 36.1 and 30.2 mm in 2012 and by 24.8 and 23.4 mm in 2013, respectively. PMS resulted in significantly higher SPAD andPnvalues at the jointing and heading stage as compared to PM (P< 0.05), and it increased by 10.2 and 23.7 at the jointing stage and 7.70 and 11.0% at the heading stage, in 2013 (extremely arid in spring), respectively. The spike length, grain number per spike, and 1000-grain weight in PMS and PM were similar, but significantly higher than those in CK. Compared to PM, PMS significantly increased yield (15.7%) and WUE (20.1%) in 2013. It suggested that PMS was considered to be superior to PM because the soil water supply after flowering was significantly improved, which facilitated yield formation.
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影响因子：
5.8
作者：
Zhang, Shulan;Sadras, Victor;Zhang, Fusuo
通讯作者：
Zhang, Fusuo
影响因子：
6.7
作者：
Li, FM;Wang, P;Xu, JZ
通讯作者：
Xu, JZ
影响因子：
--
作者：
Li, FM;Wang, J;Xu, JZ
通讯作者：
Xu, JZ
影响因子：
4.2
作者：
Colom, MR;Vazzana, C
通讯作者：
Vazzana, C
DOI：
--
发表时间：
2011
期刊：
Journal of Arid Meteorology
影响因子：
--
作者：
Shi Xiaoxia
通讯作者：
Shi Xiaoxia