本文選題：雜交中稻 + 分蘗期��； 參考：《中國稻米》2017年06期

【摘要】：以雜交中秈遲熟組合宜香優(yōu)300和川谷優(yōu)642為材料,在海南陵水旱季大田條件下,研究了分蘗期干旱處理對中秈遲熟雜交稻產(chǎn)量的影響及其緩解技術(shù)。結(jié)果表明,干旱會造成水稻減產(chǎn),主要原因是有效穗數(shù)和穗粒數(shù)顯著降低;干旱期間平均田間持水量可作為預(yù)測產(chǎn)量損失度的依據(jù);分蘗期干旱處理下,稻谷產(chǎn)量隨著施氮量和移栽密度的增加而增加,適當(dāng)提高本田施氮水平和移栽密度,可顯著降低分蘗期干旱的產(chǎn)量損失度。
[Abstract]:The effects of drought treatment at tillering stage on yield of medium indica late maturing hybrid rice Yixiangyou 300 and Chuangyou 642 in Lingshui dry season Hainan were studied in this paper. The results showed that drought could reduce the yield of rice, the main reason was that the number of effective panicles and the number of grains per panicle were significantly decreased, the average field water holding capacity could be used as the basis for predicting the degree of yield loss during drought, and under drought treatment at tillering stage, The yield of rice increased with the increase of nitrogen application amount and transplanting density. Increasing the nitrogen application level and transplanting density of Honda could significantly reduce the yield loss degree of drought at tillering stage.
【作者單位】： 四川省農(nóng)業(yè)科學(xué)院水稻高粱研究所/農(nóng)業(yè)部西南水稻生物學(xué)與遺傳育種重點實驗室;國家水稻改良中心四川瀘州分中心;
【基金】：基金項目:國家水稻產(chǎn)業(yè)體系(CARS-01-29) 糧食科技豐產(chǎn)工程(2011BAD16BO5-1)
【分類號】：S423;S511.32

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