diff --git a/backend/services/planting-service/src/pre-planting/application/services/pre-planting-reward.service.ts b/backend/services/planting-service/src/pre-planting/application/services/pre-planting-reward.service.ts
index 188f71eb..b2c92ba9 100644
--- a/backend/services/planting-service/src/pre-planting/application/services/pre-planting-reward.service.ts
+++ b/backend/services/planting-service/src/pre-planting/application/services/pre-planting-reward.service.ts
@@ -196,9 +196,9 @@ export class PrePlantingRewardService {
     ] = await Promise.all([
       this.referralClient.getReferralChain(accountSequence),
       this.authorizationClient.getCommunityDistribution(accountSequence),
-      this.authorizationClient.getProvinceAreaDistribution(provinceCode, portionCount),
+      this.authorizationClient.getProvinceAreaDistribution(provinceCode),
       this.authorizationClient.getProvinceTeamDistribution(accountSequence),
-      this.authorizationClient.getCityAreaDistribution(cityCode, portionCount),
+      this.authorizationClient.getCityAreaDistribution(cityCode),
       this.authorizationClient.getCityTeamDistribution(accountSequence),
     ]);
 
diff --git a/backend/services/planting-service/src/pre-planting/infrastructure/external/pre-planting-authorization.client.ts b/backend/services/planting-service/src/pre-planting/infrastructure/external/pre-planting-authorization.client.ts
index 926aadae..f85c4c2e 100644
--- a/backend/services/planting-service/src/pre-planting/infrastructure/external/pre-planting-authorization.client.ts
+++ b/backend/services/planting-service/src/pre-planting/infrastructure/external/pre-planting-authorization.client.ts
@@ -65,19 +65,18 @@ export class PrePlantingAuthorizationClient {
    * 省区域权益分配对象
    *
    * [2026-02-28] 修复：
-   * 1. 传 treeCount 参数（authorization-service 必需，用于省公司月度考核累计）
+   * 1. 传 treeCount=0（预种阶段不计入省公司月度考核，等合成1棵树后再累计）
    * 2. 正确解析 { distributions: [{accountSequence, ...}] } 返回格式（之前错误地期望 { accountSequence }）
    * 3. fallback 路径添加 padStart(6,'0')，确保生成 7 位标准格式（如 9440000 而非 944）
    */
   async getProvinceAreaDistribution(
     provinceCode: string,
-    portionCount: number = 1,
   ): Promise<RewardDistributionResult> {
     try {
       const response = await firstValueFrom(
         this.httpService.get<{ distributions: AreaDistributionItem[] }>(
           `${this.baseUrl}/internal/authorization/province-area-reward-distribution`,
-          { params: { provinceCode, treeCount: portionCount } },
+          { params: { provinceCode, treeCount: 0 } },
         ),
       );
 
@@ -141,19 +140,18 @@ export class PrePlantingAuthorizationClient {
    * 市区域权益分配对象
    *
    * [2026-02-28] 修复：与省区域同样的三个问题
-   * 1. 传 treeCount 参数
+   * 1. 传 treeCount=0（预种阶段不计入市公司月度考核，等合成1棵树后再累计）
    * 2. 正确解析 { distributions: [...] } 返回格式
    * 3. fallback 路径添加 padStart(6,'0')，确保生成 7 位标准格式（如 8440100 而非 84401）
    */
   async getCityAreaDistribution(
     cityCode: string,
-    portionCount: number = 1,
   ): Promise<RewardDistributionResult> {
     try {
       const response = await firstValueFrom(
         this.httpService.get<{ distributions: AreaDistributionItem[] }>(
           `${this.baseUrl}/internal/authorization/city-area-reward-distribution`,
-          { params: { cityCode, treeCount: portionCount } },
+          { params: { cityCode, treeCount: 0 } },
         ),
       );