圣女果裂果多、转色慢怎么办? 农技“轻骑兵”现场支招!
近年来,在田间地头,农技出现了很多新奇的现场小特品种,并逐渐成为农户增收致富的轻骑兵大产业,圣女果便是圣女其中之一。该品种皮薄小巧、果裂果多清甜爽脆、转色支招鲜嫩多汁,慢办不仅深受消费者欢迎,农技也成为村民增收致富的现场甜蜜产业。
圣女果又叫樱桃番茄,种植效益虽高,但同时种植技术要求也很高,裂果便是其中难点之一。近日,广州市从化区农技推广服务驿站“轻骑兵”邱晧烽深入田间地头,通过实地调查,手把手指导农户解决樱桃番茄在种植过程存在的问题。
邱晧烽指出,低温阴雨天气,空气温度增大,很容易造成圣女果裂果;在灌溉的时候,大水大肥忽干忽湿的情况也会造成裂果;施肥的时候过于偏重氮肥,而钾肥钙肥如果没有跟上,也容易造成裂果。
解决裂果问题应采取小水勤浇的方式,在灌溉的时候,最好选择膜下滴灌的方式,让土壤水分含量保持在65%-70%左右。在追肥的时候可选用含氯化钙、过磷酸钙等肥料。
邱晧烽同时表示,圣女果对肥水要求比较高,平常管理时就要注意田间肥水的管理。
圣女果种植宜采用深沟高畦栽培,畦面宽60厘米、高45厘米以上。幼苗定植后需及时喷施一次由水溶肥与生物菌剂组合成的植物病害综合预防剂进行防病。每7~10天喷洒一次,综合预防真菌、细菌、病毒的侵染。
植株定植后正处于高温多湿期,营养生长旺盛,应适当以水控肥。第一花序坐果前,土壤水分过多,容易引起植株徒长,根系发育不良,造成落花。盛果期消耗水分最多,供给充足的水分是丰产的关键,如雨水过多,应适当增加磷钾肥,同时注意镁肥和硼肥的及时补充,提高植株抗逆能力。
针对农户反馈的樱桃番茄转色难的问题,邱晧烽指出,番茄从青果转红果的时候,叶绿素转为茄红素,在这个转色的过程中是需要光照的。在低温阴雨的时候,光照不足会影响转色。如果叶片量过多,果实藏在里面,没办法照到阳光的话,也会影响转色。 此外,番茄最佳的转色的温度是25℃,温度过高或过低都会影响到番茄的转色。“很多农户在种植的时候氮肥施用过多,会造成叶绿素太重,自然就会影响到转色。”
如何解决这一问题?邱晧烽指出:栽培植株管理的时候要注意植株间的通风透气,种植不要过于密集,在施肥的时候要注意到平衡氮肥的使用,不能过量。
据介绍,从化区农技推广驿站深入推进“1+51+100+10000”农技服务体系建设,组建多支产业技术服务“轻骑兵”队伍,快速响应深入田间地头,为广大农户排忧解难,解决基层农技推广“最后一公里”和“农产品上行最先一公里”问题。
【作者】黎兆安
【来源】广州市从化区农技推广服务驿站
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