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川东南丘陵区7月中、下旬至8月上旬,常出现连晴高温天气,杂交水稻作一季中稻栽培,增产效果不及川西平坝和盆地边缘山区显著。其原因,一般均归结为高温危害。但高温对杂交水稻开花结实的影响究竟有多大?认识尚不一致;高温和干旱两因素如何共同影响杂交水稻的开花结实?其实质也不明确。为判明高温、干旱的危害规律,以便生产上采取趋利避害措施,发挥杂交水稻的增产优势,我们于1978年进行了高温、干旱对杂交籼稻开花结实的影响研究。现将试验结果,分叙于后。
In mid-July and late-August to early August, Huanghuang southeastern Sichuan Province often had the even sunny high temperature weather. The hybrid rice was used for cultivation of one-season middle-season rice, and the stimulation effect was not as remarkable as that of Pingba in the west Sichuan Basin and the mountainous area in the edge of the basin. The reason, generally attributed to high temperature hazards. However, the influence of high temperature on the flowering and fruiting of hybrid rice is not clear enough. What are the factors that affect the flowering and fruiting of hybrid rice? The essence is unclear. In order to find out the law of damaging of high temperature and drought, in order to take the measures of avoiding disadvantages and take advantage of the yield increase of hybrid rice, we carried out the research on the effect of high temperature and drought on the flowering and fruiting of indica hybrid rice in 1978. Now the test results, sub-Syria in the post.