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为了研究不同基本苗机插对中稻1号生长及产量的影响,共设6个不同基本苗机插处理,分别为A(每穴2苗)、B(每穴3苗)、C(每穴4苗)、D(每穴5苗)、E(每穴6苗)、F(每穴7苗)。结果表明,在D处理条件下,中稻1号的有效穗、穗长、每穗总粒数、每穗实粒数、结实率、千粒重、理论产量和实际产量最高,获得高产的主要原因是单位面积穗数及每穗粒数的增加;中稻1号不同基本苗机插12d后(6月30日)初始分蘖,至7月25日,处理C、D、E、F分蘖达高峰期,处理A、B分蘖高峰期晚5d。相同机插时间下,适龄移栽的中稻1号D、E、F处理在移栽至拔节阶段的群体生长速率均高于A和B处理。拔节(7月20)至抽穗阶段(8月15)的E和F处理群体生长下降速率均高于D处理。中稻1号每穴不同基本苗机插10叶前发生分蘖均能成穗,分蘖时间跨度小,成穗质量相对较好,结实率高。另外,D处理的成穗数最高,达到358.68万穗/hm2,成穗数由高到低依次排列为D>E>F>C>B>A。综上所得,中稻1号机插最适每穴基本苗数为5苗。
In order to study the effects of different basic Miaoji maize on the growth and yield of Zhongdao 1, a total of 6 different basic Miaoji machines were set up, which were A (2 seedlings per hole), B (3 seedlings per hole), C 4 seedlings), D (5 seedlings per hole), E (6 seedlings per hole), F (7 seedlings per hole). The results showed that under the condition of D treatment, the main reasons for the high yield of Zhongdao 1 were effective panicle, panicle length, total panicles per panicle, solid grains per panicle, seed setting rate, 1000-grain weight, theoretical yield and actual yield. The number of panicle per panicle and the number of grains per spike. The initial tillering of different rice seedlings of Zhongdao 1 after 12 days (June 30) and the tillering of C, D, E and F reached the peak on July 25, A, B tillering peak late 5d. Under the same planting time, the population growth rate of Zhongyao No. 1 D, E, F at the age of transplanting was higher than that of A and B at transplanting to jointing stage. The rate of decline in growth of E and F treatments at both jointing (July 20) and heading (August 15) was higher than that of D treatment. Zhongdian No. 1 per hole seedlings of different basic Miao inserted 10 leaves before the occurrence of tillers can be spike, tillering time span is small, spike quality is relatively good, high seed setting rate. In addition, D treatment of the highest number of spikes, reaching 3.5868 million spike / hm2, spike from highest to lowest in order D> E> F> C> B> A. In summary, mid-rice machine inserted the most appropriate per hole seedling number of 5 seedlings.