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西瓜在葫芦科中是不易栽培的作物,因为西瓜雌花少,每隔4—6节着生一朵,如果着果位置的雌花脱落,生长势就会越来越强,更不易着果。但是,在太低节位上着果则产量低、品质差。因此,在适宜的节位着果的管理技术是很重要的。定植后的温度管理当最低地温达到13℃以上时进行定植,约需5天成活,夜间应尽力保温,白天要遮光避免高温。为此,从拱棚上面在苗的正上方用小捆稻草盖5—7昼夜为好。成活以前若遇强低温或保温不良,就要延长成活时间,生长缓慢。最好在冷空气过后连续数日晴天时进行定植。
Watermelon is not easy to grow Cucurbitaceae crops, watermelons female flowers less, every 4-6 knots with a flower, if the fruit of the female off position, the growing potential will be more and more difficult to bear fruit. However, fruit is too low with low yield, poor quality. Therefore, management techniques that are effective at the appropriate node are important. Post-planting temperature management When the minimum temperature reached above 13 ℃ when planting, about 5 days to survive, night should try to heat, darkness to avoid high temperatures during the day. For this reason, it is better to cover 5-7 days and nights with small bales of straw just above the seedlings from above the shed. In case of strong cold or poor insulation, it is necessary to extend the survival time, slow growth. It is best to plant colonies in sunny days after cold air for several days.