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岑溪是个半山区,人多田少。前年早造试种杂交水稻高产田,亩产1,210.4斤,比条件相同的“广选3号”增产52.8%。去年早造扩种杂交水稻8,000多亩,据对6,617.64亩的过称统计,平均亩产847.3斤,其中亩产801—1,000斤的占44.8%,亩产1,001—1,100斤的占14.4%,亩产1,101—1,200斤的占7.7%。实践证明,有了具一定优势的杂交水稻组合,还要有良法才能获得高产。群体结构和长相亩产超千斤的群体结构水稻单位面积产量是由穗数、粒数、结实率和千粒重四个因素构成的。据我们对亩产超千斤的30块田的调查,其群体结构大体是:最高苗数22—26万,有效穗数13—16万,平均
Cenxi is a Mid-Levels, more people Tiantian less. Two years ago made the test hybrid rice high-yield fields, yielding 1,210.4 kg, more than the same conditions, “wide election No. 3” 52.8% increase in yield. Last year, 8,000 mu of expanded hybrid rice was made as early as the previous year. According to statistics on 6,617.64 mu, the average yield per mu is 847.3 kilograms, of which 44.8 percent is from 801 to 1,000 kilos of mu yielding 14.4 percent of the mu Produce 1,101-1,200 pounds accounted for 7.7%. Practice has proved that with a certain advantage of hybrid rice combinations, but also have a good law to get high yield. Population structure and appearance of a group of ultra-kg per mu population structure Rice yield per unit area is the number of spikes, grain number, seed setting rate and 1000-grain weight of four factors. According to our survey of 30 fields over per kilogram of ultra-yield per mu, its population structure is generally: the highest seedling number of 220,000 to 260,000, the effective panicle number of 130,000 to 160,000, the average