A farmer named Wu Chuntao from the Village of Haikou City outskirts works in the city's "Vegetable Basket Project" -- Xinyi Photovoltaic Longwan Agricultural-Solar Complementary Perennial Vegetable Planting Base (hereinafter referred to as the Agricultural-Solar Complementary Vegetable Base). The longer he works there, the more he understands one thing, that is, in terms of growing vegetables, open-air growing and photovoltaic greenhouses are completely different.
Affected by the cooling and frost a while ago, Wu Chuntao's leafy vegetables grown in the open air have been unable to grow, and he can only buy vegetables at the market with money.
However, in the agricultural and light complementary vegetable base in Fuchang Village, Jiazi Town, cabbage, loosestrife, pakchoi... all kinds of leafy vegetables are green and connected into a large area.
On the morning of March 3, when interviewed by a reporter from Hainan Daily, Wu Chuntao looked up from behind a long green leafy vegetable and couldn't help but say, "Guess what are we busy with? The vegetables at the base are too dense, so hurry up. Unplug some!"
In fact, the agricultural and light complementary vegetable base was built in response to the decline in leafy vegetable yields caused by bad weather.
"Especially from April to October every year, Hainan has a lot of rain and heavy raindrops. Sometimes the raindrops even pierce the leaves of vegetables. Coupled with the influence of typhoons, greenhouses must be used for planting at this time. However, many small vegetable farmers do not have such equipment, resulting in The supply of leafy vegetables in Hainan is low in summer." Wan Shuming, assistant general manager and planting technical director of Haikou Vegetable Basket Agricultural Technology Development Co., Ltd., explained to reporters.
In order to ensure stable supply and stable prices for citizens' "vegetable baskets", Haikou Caibasanzi Group cooperates with social capital Fang Xinyi Company to build a vegetable basket Longwan agricultural and photovoltaic complementary vegetable planting base, combining vegetable planting and photovoltaics ingeniously to explore the three-dimensional agricultural and photovoltaic complementary A new model of agriculture. At present, Haikou has built 1,200 mu of photovoltaic vegetable greenhouses, of which more than 200 mu of vegetables are grown.
The reporter saw at the scene that, different from ordinary greenhouses, transparent thin-film solar photovoltaic glass and solar thin-film solar panels are installed on the greenhouse roof of the agricultural and light complementary vegetable base to achieve power generation on the roof and vegetable cultivation in the greenhouse. There is a gap of about the size of a long vegetable between every two photovoltaic panels. The dishes under the gap can receive sunlight through the transparent film, while the dishes under the photovoltaic panels are equipped with supplementary lights. Vegetables under the two light conditions were planted alternately.
Tao Junqiang, technical director of Xinyi Solar (Haikou) Co., Ltd., said that this model makes full use of the land resources and support resources of photovoltaic projects, which not only improves the land utilization rate, but also ensures the structural stability of the greenhouse. ."
Since the trial in October 2020, the 200-acre agricultural and light complementary vegetable base in Haikou has been continuously transformed and improved according to the actual situation. Now it has realized six major functions including irrigation, rain and wind resistance, waterlogging drainage, insect control, temperature control and video surveillance. The leafy vegetables in the base are sprouted every 35 to 45 days, with an average yield of 1,500-1,800 catties per mu, which effectively guarantees the supply of leafy vegetables in Haikou, especially in the off-season.
"These are almost the same size, and they will be ready to serve in about a week." Wan Shuming put on his straw hat and pointed to the long vegetables in front of him.
Right now, Xinyi Solar (Haikou) Co., Ltd. is doing film renovations on 1,200 mu of land in Tuling Village and Xin'an Village, Jiazi Town. It's gone." Tao Junqiang said.
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