不同种植方式对土壤肥力和水稻根系生长的影响_任万军.pdf

212 Vol. 21 No. 2 20074 Journal of Soil and Water Conservation Apr. , 2007 ¹ * * 任万军, 杨文钰 , 樊高琼, 陈德春, 吴锦秀 ( , 62 014) : 22162 047, K : , , , , , 30 d : ; ; ; : S 11; S1 8. 3: A : 1009-2242( 2007) 02-0108-03 Eff ect of Diff erent Till age and Transpl anting Methods on Soil Fertility and Root Growth of Rice * * REN Wan-jun, YANG Wen-yu , FAN Gao-qiong, CHEN De-chun, WU Jin-xiu ( Colleg e of A g r onomy , S ich uan A g r icultural Univ er sity , Yapan , S ichuan 62 014) Abstract: Effects of different tillage and transplanting methods on soil fertility and root growth of rice, three culti- , 22, 162 047, . vars Gangyou you and Kyou w ere studies w ith the methods of field experiments T he results : - show ed as follow s T he soil fertility w as increased by treatment of the broadcasted among high standing stubbles - ( ) , , , , under no tillage condition BCSNT and its content of organic matter total N K and available N K w as higher than those of conventional tillage transplanting rice, cast-transplanting rice and basic soil fertility . The root and top increment of BCSNT w as low er than other treatments in early stage and its total root length and root number ,