Study on the adjustment of Grouting Characteristics of Winter Wheat Seed by Soil Water Controlling
Kai Zhang · Mailei zuowu xuebao · 2006
The process of grouting controlled by water is conformed by Logistic curve and the difference of grouting parameter is analyzed in wheat grown in water-proof shelf.The result showed that water controlling brings different effect on grouting parameter.At the aspect of the length of grouting,T_(max) and T_1 are more stable than T_2 and T_3;At the aspect of the velocity,R is the most stable,next is R_(max),R_1,R_2;There are obvious effects on grouting parameter when watering once at internode elongation stage or internode elongation stage and booting stage twice;the divergence of strong and weak seed is not distinct in the grouting parameter,strong seed is better than weak seed.Under the circumstances of high-yield planting at Henan,increasing slow-growth stage of grouting(R_3),and enlonging duration of slow-growth stage(T_3)relatively,boosting yellow ripening,is advantaged to increase grain-weight.