基于DSSAT模型模擬高低溫災(zāi)害對荊州市中稻產(chǎn)量的影響及對策
發(fā)布時間：2018-04-16 11:06
本文選題：高溫?zé)岷?/strong> + DSSAT模型��； 參考：《江西農(nóng)業(yè)大學(xué)學(xué)報》2017年02期
【摘要】：為篩選出湖北省荊州市中稻種植的最適播期,利用DSSAT模型評估荊州市中稻生長季內(nèi)高溫和低溫災(zāi)害發(fā)生變化規(guī)律及高溫災(zāi)害對水稻產(chǎn)量的影響,擬通過播期調(diào)整降低該區(qū)域水稻生產(chǎn)的高低溫災(zāi)害風(fēng)險。采用DSSAT 4.5模型和近36年來逐日氣象資料對1971—2006年荊州市中稻的高低溫災(zāi)害風(fēng)險及高溫對產(chǎn)量的影響進(jìn)行定量化評估,并確定該區(qū)域中稻種植的最適播期。結(jié)果表明,與1971—1986年相比較,1987—2006年荊州市中稻種植的發(fā)生熱害與冷害的頻率有增大趨勢,而且受氣候變化的影響,中稻有減產(chǎn)趨勢;相比較1971—2006年7個播期的減產(chǎn)率以及原始模擬產(chǎn)量與調(diào)整模擬產(chǎn)量,最適播期選擇在4月20—25日可一定程度上避開中稻在孕穗—揚花期遇到高溫?zé)岷�。在全球變暖的背景�?荊州市中稻最適播期為4月20—25日可有效避開中稻孕穗—揚花期的高溫影響,為該區(qū)域中稻抗避高溫栽培提供參考依據(jù)。
[Abstract]:In order to select the optimum sowing time for middle rice planting in Jingzhou, Hubei province, the variation of high and low temperature disasters during growing season and the effect of high temperature disaster on rice yield were evaluated by DSSAT model.It is proposed to reduce the risk of high and low temperature disaster of rice production in this region through sowing time adjustment.Using DSSAT 4.5 model and daily meteorological data in recent 36 years, the risk of high and low temperature disaster and the effect of high temperature on yield of middle rice in Jingzhou City from 1971 to 2006 were quantitatively evaluated, and the optimum sowing time of middle rice planting in this area was determined.The results showed that, compared with 1971-1986, the frequency of heat and chilling damage of middle rice planting in Jingzhou City from 1987 to 2006 was increasing, and it was affected by climate change, and there was a tendency to reduce the yield of medium rice.Compared with the yield reduction rate of 7 sowing dates from 1971 to 2006 and the original simulated yield and the adjustment of simulated yield, the optimum sowing date was 20 to 25 April to avoid the high temperature heat damage of middle rice in booting and flowering stage to some extent.Under the background of global warming, the optimum sowing date of middle rice in Jingzhou city is April 20-25, which can effectively avoid the effect of high temperature on booting and flowering stage of middle rice, and provide a reference for the cultivation of resistance to high temperature in this region.
【作者單位】： 長江大學(xué)農(nóng)學(xué)院/主要糧食作物產(chǎn)業(yè)化湖北省協(xié)同創(chuàng)新中心;
【基金】：國家科技支撐計劃項目(2014BAK19B06-03) 國家自然科學(xué)基金項目(31270488,31501274) 主要糧食作物產(chǎn)業(yè)化湖北省協(xié)同創(chuàng)新中心開放基金項目(2015MS001)~~
【分類號】：S42;S511.32
【相似文獻(xiàn)】
相關(guān)會議論文 前1條
1 劉元成;胡久生;彭華偉;汪權(quán)方;邢曉燕;涂建華;李惠萍;劉燕平;李锏;馬嵐;萬靜;劉珊;彭長華;李忠臣;王偉群;高守杰;謝凱;王蕓麗;郭光毅;汪權(quán)方;邢曉燕;涂建華;;江漢平原中稻種植及估產(chǎn)遙感監(jiān)測研究[A];2013年中國農(nóng)業(yè)資源與區(qū)劃學(xué)會學(xué)術(shù)年會論文集[C];2013年
，本文編號：1758609
本文鏈接：http://sikaile.net/kejilunwen/nykj/1758609.html
最近更新
教材專著
