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1.崔竹松水稻高产田的代谢特点为:前期以氮素代谢为主,据几年来测定,在有效分蘖停止期,叶片含氮量平均为4.5%左右,为促进营养体早生快发,叶片上色快,出现“一黑”,叶片质地较软,向两侧弧形甩开,长得很“秀气”的样子,单株多数呈“三股叉”,丛形似“喇叭筒”的出现创造了良好条件。拔节时期(7月17日左右)植株体内含氮量显著下降,碳水化合物含量逐渐增高,在外观上表现出叶色明显退淡,出现“拔节黄”,叶片质地变硬,叶片竖起,叶面粗糙多毛,丛形似“大胡子”状,长得很有“精神”的样子,象征着高产水稻由营养生长顺利地转入生殖生长阶段。孕穗中后期,转入以碳素代谢为主的阶段,碳氮此值显著加大,有利于干物质积累,壮杆大穗和粒重粒饱等良好性状的出现。2.高产水稻植株体内碳素前期以叶鞘积累为主,中后期茎、鞘同时积累,后期以穗积累为主,共运转方向由叶片→叶鞘→茎→穗。干物质积累与碳素物质积累趋势一致。而且,在适宜的氮素水平下,碳素物质积累量愈高,干物质积累量愈多,产量亦愈高。3.由于高产水稻一生的碳氮代谢比较协调,因而器官间生长亦比较协调。初步认为在水稻孕穗阶段叶鞘与叶片的干重比值大小可作为衡量器官相关生长是否适宜的生理指标,一般鞘/叶的干重比值大,表现千粒重高,经济系数比较大,产量亦较
1. Cui Tusong metabolic characteristics of high-yielding fields of rice as follows: nitrogen metabolism in the early stage, according to several years to determine the effective tillering period, the average nitrogen content of leaves about 4.5%, in order to promote the early vegetative rapid hair foliage Color fast, there is “a black”, the leaf texture is soft, off to both sides of the arc, looks very “delicate” look, the majority of the plant was “three forks”, plexus-shaped appearance of “horn” Good condition. At jointing stage (about July 17th), the content of nitrogen in plants decreased significantly, and the content of carbohydrate increased gradually. The appearance of leaves showed obvious discoloration, “jointing yellow”, hardened leaves, erect leaves, Rough, hairy, plexiform “bearded” shape, looks very “spirit” look, symbolizes the high yield of rice from vegetative growth smoothly into the reproductive growth stage. In the middle and later booting stages, the stage of carbon metabolism turned to be the main stage. The value of carbon and nitrogen was significantly increased, which was conducive to the appearance of good traits such as dry matter accumulation, large spikelets of barrows and full grain weight. The high-yielding rice plants mainly accumulated leaf sheaths in early prophase, while the stems and sheaths accumulated in the middle and later stages, while the accumulation of ear mainly occurred in the late stage. The total running direction was from leaves → leaf sheath → stem → ear. Dry matter accumulation is consistent with the trend of carbon accumulation. Moreover, at the appropriate nitrogen level, the higher the carbon accumulation, the more dry matter is accumulated and the higher the yield. 3. Due to the coordinated coordination of carbon and nitrogen metabolism in high-yielding rice throughout life, the growth of organs is also more coordinated. It is preliminarily thought that the ratio of leaf dry weight to leaf dry weight at the booting stage can be used as a physiological index to measure the organ-related growth. Generally, the sheath / leaf dry weight ratio is large, which means that the dry weight is high, the economic coefficient is relatively large,