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豫粳 6号高产形成的主要原因是 :分蘖力特强、穗多粒多。其高产栽培策略应为 :在稳定适宜穗数的前提下 ,主攻大穗 ,提高成穗率、结实率和千粒重 ,发挥个体生长优势 ,建立高质量的群体。 9750kg/hm2 以上水平的产量结构应为 :每公顷有效穗数 34 5万左右 ,每穗总粒数 130粒左右 ,结实率 95%左右 ,千粒重 2 6 5g以上。主要技术措施有 :旱育长龄健根多蘖壮秧 ;扩行缩墩减苗 ;适时适度搁田 ;均衡施氮 ,前后期施氮比例为 6∶4 ,增施促花复合肥 ,氮、磷、钾配比以 1∶0 5∶0 6为宜
Yujing 6, the main reason for the formation of high yield is: strong tillering ability, spike and more grain. The high-yielding cultivation strategy should be: under the premise of stabilizing the appropriate spike number, the main big spike, increase the ear rate, seed setting rate and 1000-grain weight, give play to individual growth advantages, and establish high-quality groups. The yield structure above 9750kg / hm2 should be: the effective spike number per hectare is about 3450,000, the total number of spikelets per spike is about 130, the seed setting rate is about 95% and the thousand seed weight is more than 265g. The main technical measures are as follows: drought-tolerant longan roots with more tillers and strong seedlings; expansion of shrinking pier and seedling reduction; timely and appropriate rest of fields; balanced application of nitrogen and nitrogen application rate of 6: 4, , Phosphorus, potassium ratio to 1:05:06 appropriate