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去年我社种植的后季稻嘉农15,由于管理措施得当,到灌浆末期,稻株还普遍持有2—3片绿叶,所以后期清秀、活熟、粒重增加。据测定千粒重,全社平均为28.67克,比1977年的27.1克增加1.57克。水稻抽穗扬花以后,谷粒中三分之二以上的干物质是靠上部三片叶进行光合作用制造的。因此,水稻灌浆期间,稻株持有三片以上绿叶时,能有效地提高光合作用产物,增加粒重。我们于1978年后季稻嘉农15收割时,对持有不同绿叶数稻株的谷粒,分别进
Last year, our company planted late rice Jianye 15, due to proper management practices, to the end of the grout, rice plants also generally hold 2-3 green leaves, so the late Qingxiu, live, grain weight increase. According to the measured 1000-grain weight, the whole community averaged 28.67 grams, an increase of 1.57 grams over the 27.1 grams in 1977. After the heading and flowering of rice, more than two thirds of the dry matter in the grain is produced by the photosynthesis of the upper three leaves. Therefore, during rice grain filling, when rice plants hold more than three green leaves, they can effectively increase photosynthetic products and increase grain weight. When harvesting rice in Jianyin 15 in the latter part of 1978, we divided the grains of rice with different green leaf numbers into