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1980年由于气候反常,我国以北海道和东北地方为中心的稻作区,遭受了少见的全国性冷害。其表现不仅有孕穗期低温引起的障碍型不结实,而且有开花期的障碍型不结实,还有灌浆期低温导致的成熟不良,更加重了冷害的程度。对于这次冷害的预防措施,在技术方面是培育高度耐冷性品种,育壮秧,适时移栽,掌握正确的施肥量和施肥法等。特别是施用堆厩肥,实施白天停灌、孕穗期深水灌溉等基
As a result of the climate anomalies in 1980, the rice-growing region in our country, centered on Hokkaido and northeast China, suffered a rare national chill. Its performance is not only the booting stage low temperature caused by the obstruction is not strong, and the flowering of the obstruction is not strong, as well as low temperature during filling caused by poor maturity, more emphasis on chilling injury. For this chilling prevention measures, the technical aspects are to cultivate highly cold-tolerant varieties, nurturing seedlings, timely transplanting, to master the correct amount of fertilizer and fertilization method. In particular, the use of heap manure, the implementation of stop-irrigation during the day and booting stages of deep-water irrigation and other bases