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近年来河北省中南部温室内番茄出现大面积叶片黄化卷曲等早衰情况,主要表现为植株中下部叶片出现失绿,叶脉间出现模糊的黄化现象,后向中上部叶扩展,形成黄花斑叶,严重的叶片略僵硬或边缘上卷,整叶变黄卷曲成桶状,经过笔者在种植地实地考察,结合几年来的栽培实践和当地农户种植经验,查找总结了其早衰原因并探索相应解决方案。一、影响温室番茄早衰的原因1、底肥中畜禽粪便的影响大部分发生番茄早衰的农户使用未经腐熟或腐熟不充分的鸡粪和牛粪,这类作为有机肥原料畜禽粪便含有大量盐分,据统计每立方鸡粪中最多含盐量在20公斤,牛粪中含有大量尿酸,这类物质在土壤中都会抑制番茄根系的发生和伸长;未经腐熟的畜禽粪便施入土壤中会产生热
In recent years, central and southern Hebei Province, greenhouse tomatoes in large areas appear yellowing curly leaf premature aging, mainly in the lower leaves of plants appear green, fuzzy between the veins appear yellowing phenomenon, after the middle and upper leaves to expand, the formation of yellow spot Leaves, severe leaves slightly stiff or the edge of the volume, the entire leaf turns yellow curled into a barrel, after the author in the field inspection, combined with years of cultivation practices and local farmers planting experience, find out the causes of premature aging and explore the corresponding solution. First, the impact of greenhouse premature causes of failure 1, the impact of animal manure in the base fertilizer most of the occurrence of premature failure of farmers use not fully decomposed or maturity of chicken manure and cow dung, such as organic manure raw material manure contains a lot of salt , According to statistics, the maximum salt content per cubic hen drop in 20 kg, cow dung contains a lot of uric acid, these substances in the soil will inhibit the occurrence and elongation of tomato root system; without dung manure into the soil will be Generate heat