栽培措施对"沈稻9号"产量和品质的影响

为了明确水稻高产条件下的栽培模式,增加水稻产量,改善稻米品质,试验采用规范化设计,以"沈稻9号"为材料,研究了氮、磷、钾施用量及水稻播种量和移栽密度对水稻生长发育的影响。结果表明:稻米的品质性状中,垩白度、垩白粒率受处理因子影响变异较大,直链淀粉含量和食味值差异较小。影响产量的主要因子是施氮量,增施氮肥穗数增加,但同时千粒重降低。施氮有利于糙米率和精米率的提高,但同时稻米垩白粒率明显增加,食味值下降,蛋白质含量增加。增施钾肥有利于提高食味值、降低蛋白质含量。增加插秧穴距,穗数和穗粒数都有增加的趋势,有利于提高碾磨品质,同时降低垩白粒率和垩白度。各处理因子对碱消值和直链淀粉含量影响均不显著。群体净同化率与抽穗后干物生产量呈极显著的正相关。最大叶面积指数与总干物重之间呈二次抛物线关系。

Effect of Cultivation Measures on Yield and Quality of Shendao 9

Using Shendao 9 as a material,the effects of N,P,K application,seeding rate and planting density on rice growth and development were studied by standardization design to determinate cultivation measures in condition of highyield rice for increasing yield and improving rice quality.The results showed that coefficients of variation(CV) affected by treatment factors on chalkiness and percentage of chalky kernel were larger in traits,while the CVs of gel consistency and eating value were smaller.The multiple re...