水稻旱栽钵苗移栽适宜条件研究初报

Research on Optimized Conditions for Transplanting of Dry-Cultivated Rice Seedlings

对土壤含水率、钵苗埋深、钵苗高度对水稻旱栽秧苗成活率及其长势的影响进行了研究。结果表明:秧苗成活率及长势随着钵苗移栽时土壤含水率的增加而增加,但85%与100%的土壤含水率对钵苗成活率和长势的影响无显著差异;钵苗埋深2 cm时其成活率较高;在相同土壤含水率及埋深条件下,钵苗高15 cm时秧苗成活率及长势最好。因此最适水稻旱栽秧苗移栽条件为:土壤含水率85%、钵苗埋深2 cm、钵苗高度15 cm。

The effects of soil moisture content,buried depth and height of pot seedlings on survival rate and growth of dry-planted rice seedlings were researched by field experiment. The results showed that the seedling survival rate and growth were enhanced with the increase of soil moisture content at transplanting time,but they were not significantly different between 85% and 100% of soil moisture contents. When the pot seedlings were buried at the depth of 2 cm,the survival rate was higher. When the pot seedlings were 15 cm of height,their survival rate and growing were the best under the same soil moisture content and buried depth. In conclusion,the optimal conditions for transplanting rice seedlings for dry cultivation were 85% of soil moisture content,2 cm of pot seedling buried depth and 15 cm of pot seedling height.