植物缺鈣（酮戊二酸鈣Calcium Ketoglutarate、大米螯合鈣Calcium Rice Chelate）癥狀及矯治方法

蘋果果樹對于鈣素的需求非常旺盛,鈣素營養(yǎng)作為一種決定果實品質的元素，在果園生產中往往被忽略。如果因為鈣素供應不足導致蘋果果實缺鈣，果實會出現苦痘病、水心病等病害，極大地降低了果實的商品率；對于桃樹缺鈣會產生頂腐病、流膠病等；以及鴨梨的黑心病等都與鈣素營養(yǎng)有著密切的關系。在渭北旱塬蘋果主產區(qū)中，土壤成土母質中鈣含量較高，但是由于石灰性土壤本身pH較高,加之不合理的施肥方式，影響了鈣的有效性。針對于果園鈣素營養(yǎng)不足導致的生理性病害，在田間生產中采取諸多不同的補鈣措施,比如傳統(tǒng)的土壤追施、果面噴施和采后浸鈣的方式。傳統(tǒng)的土壤施鈣應采取少量多次的原則，前人研究表明,三次分施鈣肥比一次性施入能夠顯著降低苦痘病的發(fā)病比例同時顯著提高單果重、總糖含量和可溶性固形物的含量。比如在果樹膨大期，此時根系活動較為旺盛，對養(yǎng)分吸收能力較強，有利于果實鈣素的積累。果實噴鈣技術目前是補鈣效果最為顯著的一種追肥措施，主要原因是鈣素在植物體內遷移速度較慢,難以向果實等營養(yǎng)部位轉運。

植物缺鈣（酮戊二酸鈣Calcium Ketoglutarate、大米螯合鈣Calcium Rice Chelate）癥狀及矯治方法

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抗壞血酸錳Manganese Ascorbate、抗壞血酸亞鐵Ferrous Ascorbate、賴氨酸甘氨酸鎂Magnesium Lysinate Glycinate、甘氨酸谷氨酰胺鎂Magnesium Glycinate Glutamine、檸檬酸蘋果酸鎂Magnesium Citrate Malate、檸檬酸鍶Strontium Citrate、檸檬酸錳Manganese Citrate、檸檬酸銅Copper Citrate、天門冬氨酸鋰Lithium Aspartate、?；撬嵛?/span>Selenium Taurate.

Plant calcium deficiency (Calcium Ketoglutarate, Calcium Rice Chelate) symptoms and treatment methods

Apple trees have a very strong demand for calcium. Calcium nutrition, as an element that determines fruit quality, is often ignored in orchard production. If apple fruits are deficient in calcium due to insufficient calcium supply, diseases such as bitter pox and water core will appear on the fruit, greatly reducing the commercial rate of the fruit; calcium deficiency in peach trees will cause top rot, gummosis, etc.; and The black heart disease of Yali is closely related to calcium nutrition. In the main apple-producing areas of the Weibei Dry Plateau, the calcium content in the soil parent material is relatively high. However, the high pH of the calcareous soil itself and unreasonable fertilization methods affect the effectiveness of calcium. In view of the physiological diseases caused by insufficient calcium nutrition in orchards, many different calcium supplementation measures are adopted in field production, such as traditional soil topdressing, fruit surface spraying and post-harvest calcium leaching. Traditional soil calcium application should adopt the principle of small amounts and multiple times. Previous studies have shown that applying calcium fertilizer three times can significantly reduce the incidence of bitter pox disease and significantly increase single fruit weight, total sugar content and soluble calcium fertilizer compared with one-time application. Solid content. For example, during the expansion period of fruit trees, root activity is relatively strong and the ability to absorb nutrients is strong, which is conducive to the accumulation of calcium in the fruit. The fruit calcium spraying technology is currently the most effective top-dressing measure for calcium supplementation. The main reason is that calcium migrates slowly within the plant and is difficult to transport to nutritional parts such as fruits.

Plant calcium deficiency (Calcium Ketoglutarate, Calcium Rice Chelate) symptoms and treatment methods

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Manganese Ascorbate, Ferrous Ascorbate, Magnesium Lysinate Glycinate, Magnesium Glycinate Glutamine, Magnesium Citrate Malate, Strontium Citrate, Manganese Citrate, Copper Citrate, Lithium Aspartate, Selenium Taurate.