For greenhouse drip-irrigated tomatoes, it is essential to implement a scientific and rational irrigation plan. To summarize and formulate the correct irrigation plan, it is necessary to understand the natural water requirements of tomatoes. Below, CHENGSA Holdings summarizes the water requirement patterns and irrigation plan for drip-irrigated tomatoes.

1. Water Requirement Patterns for Drip-Irrigated Tomatoes

The water requirement intensity for greenhouse drip-irrigated tomatoes increases initially and then gradually decreases as the growth period progresses. During the flowering and fruit-setting stage and the mature harvesting stage, vegetative growth and reproductive growth occur simultaneously, leading to a high water demand, which is the critical period for water requirements in greenhouse drip-irrigated tomatoes.

2. Irrigation Plan for Drip-Irrigated Tomatoes

Water is a major component of tomatoes, with over 90% of the fruit consisting of water. Tomato plants are tall, have numerous leaves, and the fruits are harvested multiple times, resulting in a high demand for water. Therefore, the soil moisture should be maintained at 65% to 85%.

After transplanting greenhouse tomatoes, irrigate immediately with transplant water, and irrigate with recovery water once 7 days after transplanting. The transplant water and recovery water should be 20m³ per 667m² respectively. Throughout the entire growth period, irrigate a total of 13 times, with an irrigation quota of 370m³ per 667m², a single irrigation quota of 30m³, and an irrigation cycle of 7 days.