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通过对番荔枝苗木生长动态、苗木生物量积累和分配模式研究,建立了苗木的生长模型、连日生长量模型,并据此模型将番荔枝苗木生长进程划分为:生长初期、速生期、缓增期和停滞期。其中,苗高和地径在速生期间的生长量占全年总生长量的67.38%和70.33%。苗木生物量积累与苗高、地径的函数模型关系表明:全株干质量、地上干质量、全株含水量和地上部分含水量与苗高和地径显著相关。番荔枝苗木生长210 d全株可积累干质量7.39 g,其中地上部分为4.86 g,地下部分为2.53 g,全株含水量是全株干质量的1.68倍。建议根据苗木不同阶段的生长特性提出相应的育苗技术措施。本研究为高效培育番荔枝优质苗木提供了科学依据。
Based on the growth dynamics of seedling, the biomass accumulation and distribution pattern of seedling, the seedling growth model and daily growth model were established. According to the model, the growth process of the seedling of Annona squamosa was divided into: growth, rapid growth, Period and stagnation. Among them, the growth of seedling height and diameter during fast growing accounted for 67.38% and 70.33% of the total annual growth. The relationship between seedling biomass accumulation and the function model of seedling height and diameter showed that the whole plant dry weight, aboveground dry weight, whole plant moisture content and aboveground water content were significantly correlated with seedling height and diameter. On the 210th day after the seedlings were grown, the whole plant could accumulate 7.39 g dry weight, including 4.86 g on the ground and 2.53 g on the ground. The whole plant’s water content was 1.68 times that of the whole plant. Proposed according to different stages of seedling growth characteristics of the corresponding nursery techniques. This study provides a scientific basis for efficient cultivation of high quality seedlings of Annona.