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今年,我所栽培早中稻杂种21个组合,面积117.6亩,除26亩是台子田、黄泥底子外,其余是垅田,青夹泥底子,地下水位高,土质较差。我们于三月二十九日、四月八日、四月二十七日、五月九日、五月十二日分批播种。五月十日、五月一十四日、五月二十七日到六月一日分批插秧。八月十六日开始收获,到九月二十三日收完。实收面积116.4亩,总产干谷119687斤,平均亩产1030.5斤。其中二九南一号A×IR24等三个组合,面积5.38亩,总产7091斤,平均亩产1323.6斤;二九南一号A×IR24和IR661,共56.72亩,总产62343斤,平均亩产1100斤。下面就怎样发挥杂种优势的几个栽培技术问题,谈谈我们的初步体会:
This year, I planted 21 hybrid early-middle-aged rice hybrids with an area of 117.6 mu. Except for 26 mu is Taizitian and Huang Nai, the rest is Nao Tian and Qing Jia Mudaizi, with high groundwater level and poor soil quality. We sow in batches on March 29, April 8, April 27, May 9 and May 12. May 10, May 14, May 27 to June 1 in batches. Harvest begins on August 16 and ends on September 23. The actual area of 116.4 mu, total dry valley 119687 kg, the average yield of 1030.5 kg. One nine nine South One A × IR24 other three combinations, an area of 5.38 acres and a total output of 7091 pounds, an average of 1323.6 kg per mu; two nine South One A × IR24 and IR661, a total of 56.72 acres, a total of 62,343 pounds, the average Yield 1100 pounds per mu. Here’s how to play heterosis several cultivation techniques, to talk about our initial experience: