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1 收获技术 1.1 收获时间我国北方矮牵牛主要作为园林绿化花卉使用,一般进行春播,花期为6～9月份,果熟期为8～10月份;温室栽种一年四季均可开花,果熟期在花期过后30d左右。矮牵牛的果实为蒴果,成熟后极易开裂,种子散落在地上,若收获不及时会造成种子大量损失。但若收获过早会严重影响种子的发芽率,所以必须掌握好收获时间,才能获得高产优质的种子。实践经验表明,当矮牵牛种子的蒴果果皮变黄,皮质变硬且脆;子粒变硬,变成黑褐色时即是种子成熟的标志,此时即可采收。
1 Harvesting Techniques 1.1 Harvesting Time Northern Petunia in northern China is mainly used as landscaping flowers, generally sowing in spring, the flowering period is from June to September, and the ripening period is from August to October. The greenhouse can be planted all year round and the fruit ripening period About 30 days after flowering. Petunia fruit capsule, mature easily cracked, the seeds scattered on the ground, if the harvest will not cause a lot of seed loss. However, if the premature harvest will seriously affect the germination rate of the seeds, we must master the harvest time in order to obtain high yield and quality seeds. Practical experience shows that when the petunia pericarp turns yellow, the cortex hardens and becomes brittle; the kernel hardens and becomes dark brown when it is the mark of seed maturity, at which point it can be harvested.