茂名发布技术指导意见，全力打好荔枝促花保花壮花关键战

Core Viewpoint - The Maoming Agricultural and Rural Affairs Center has issued technical guidelines to enhance the flowering and fruiting of lychee trees, emphasizing the importance of timely interventions during critical growth periods to ensure a successful harvest this year [2][4]. Summary by Relevant Sections Current Situation - The flowering and fruiting of lychee trees in Maoming are at a crucial stage, with significant differences in the development of flower buds and flower clusters among various lychee varieties [11][12]. - Early varieties like "San Yue Hong" and "Xiang Mi" are entering the flowering stage, while late varieties are showing slower progress [13][15]. Weather Impact - February's average temperature in Maoming is forecasted to be 18-19°C, slightly higher than usual, with rainfall expected to be 50-60% less than normal [7][8]. - Two cold air events are predicted, which may help stabilize flowering for mid and late-maturing varieties, but overall high temperatures and low rainfall could lead to issues like excessive sprouting and reversed flower buds [9][10]. Challenges to Flowering - The impact of last year's Typhoon "Maitian" has resulted in uneven growth and damage to the second batch of shoots, complicating the flowering process [18][22]. - Insufficient nutrient accumulation and cold accumulation from the previous season have further constrained flowering, leading to irregular flowering and increased sprouting risks [23][28]. Technical Measures - Five key technical measures have been proposed to promote flowering and fruit retention: 1. Stimulate flower bud sprouting through the use of growth regulators and proper irrigation [32][36]. 2. Prevent excessive sprouting by applying specific agents to manage leaf growth [37][38]. 3. Control flower clusters by thinning flowers and promoting robust growth of remaining clusters [39][41]. 4. Implement pest and disease control measures before flowering [42]. 5. Ensure safe application of chemicals by testing on a small scale before widespread use [44][46]. Conclusion - The Maoming Agricultural and Rural Affairs Center emphasizes the need for flexible application of these measures based on weather changes and the actual growth conditions of the orchards to secure this year's lychee production [47].