【摘要】 Ⅱ优沈98具有产量高、米质优、较抗稻瘟病、稳产性好等优点。通过对其产量构成因素进行变异系数分析、相关分析和通径分析,探讨各因素内在联系及对产量的作用大小和主要增产途径,提出相应的高产栽培措施。其高产栽培策略是:在足穗、大穗的前提下,努力提高结实率,实行健身栽培,加强中后期田管,实现各产量要素的协调发展。更多还原

【Abstract】 Hybrid rice combination II You Shen 98 was characterized by high yield, good quality, more resistant blast and good yield stablity. We had analysed variation coefficient, correlation coefficient and path coefficient among yield components, explored their internal relations among various factors, their roles of the size to yield and main increasing approaches, and finally proposed appropriate measures for high-yielding cultivation. Its cultivation strategies for high yield were: under the condition of full panicles and big spikelets, to improve seed-setting rate, to carry out healthy cultivation, to strengthen field management in mid-and late stages and to realize the coordinated development of various yield components.更多还原