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安徽中南部热量资源“双季稻不足,一季稻有余”地区有稻田近100万亩可发展再生稻。50年代前有蓄留再生稻的长期历史,但一般靠天收,亩产仅几十公斤,推广双季稻后向乎绝迹。近年由于育成一批适于此区再生栽培的品种(组合),改进了栽培技术,再生两熟总产可接近双季稻,显著节省工本,深受农民欢迎,迅速发展了几万亩。然而也有因用种或栽培技术不当使再生稻大面积失收的。再生稻能高产难稳产。它由头季稻茎节潜伏芽培育成穗,头季若生育不良不仅当季欠收,再生稻也显著减产。再生稻在头季抽穗前已开始穗分化,其营养生长完全与生殖生长并进,生育期比双晚约短1倍。为适应我省中南部发展水稻生产的迫切需要,在安徽省科委支持下,我们研究了早中稻再生两熟高产高效栽培数学模式。
Heat resources in central and southern Anhui Province, “double-season rice shortage, more than one season of rice,” there are nearly 100 million mu of paddy fields can develop ratooning rice. Before the 1950s, there was a long history of regenerating rice. However, it usually received only a few dozen kilograms per mu. In recent years, due to bred a number of varieties (combinations) suitable for the regeneration of cultivation in this area, improved cultivation techniques, renewable double crop yields close to double cropping rice, significant savings in the work, welcomed by farmers, the rapid development of tens of thousands of acres. However, there are also large areas of regenerated rice lost due to improper planting or cultivation techniques. Ratoon rice can be difficult to produce high yield. It grows into the ear by the latent season buds of the first season rice stem section, if the first season if the maternity not only owes the season, the regenerative rice also reduced significantly. Ratooning rice has begun to spike differentiation before heading in the first season, and its vegetative growth goes hand in hand with reproductive growth. In order to meet the urgent need of developing rice production in central and southern part of our province, with the support of Anhui Science and Technology Commission, we studied the mathematical model of high yielding and high yielding cultivation of early maturing rice.