"Yesterday morning, his watermelon was less ripe, and others shared a car of nearly 6,000 pounds, I pulled to Yuncheng last night all sold out, his watermelon shape is positive, good fur, melon crisp, high sweetness, enough moisture, melon flavor, very good selling! No, I came again this morning, this time to fill a car, and I'll come again tomorrow. On May 12, Wang Jianguo, who was in the fruit sales business in Yuncheng City, Shanxi Province, rushed to the melon orchard of Li Xuehu in Xima Village, Yuxiang Town, Yongji City, Yuncheng City, early in the morning to "harvest" watermelons.
"This year is the best year for the growth, yield and quality of watermelons that I have grown for more than 40 years!" Li Xuehu said while transporting the picked watermelons out of the arch shed with his wife.
△ Li Xuehu is picking watermelons
According to Li Xuehu, it has been more than 40 years since he left the campus to start planting watermelons. "I used to grow watermelons in the open air, but more than 20 years ago, I started to grow watermelons in an arched shed, and the earliest arch shed in our family has been growing melons for 25 years, and the latest is 15 years." Li Xuehu said.
△ The watermelon seedlings that are about to ripen in Li Xuehu's garden are still green and strong
△ Seedlings in other untreated heavy crop melon orchards in the same place
Due to years of heavy cropping, Li Xuehu found that the yield and quality of watermelons in the field were getting worse year by year. "I have also tried to plant a crop of watermelon, and then plant another crop of vegetables, but it still can't change the problem of declining melon yield and quality year by year, and I also understand that this is caused by watermelon heavy planting, but we are now planting watermelons here, and there is no land at all if you want to fall stubble, and I have also used a variety of methods, used a variety of fertilizers to prevent and control heavy crop diseases, but the effect is not good." Li Xuehu said while reminiscing.
△ Watermelon in Li Xuehu's garden
Until this year's planting of melon seedlings, Shaanxi Saizhong Biotechnology Co., Ltd. Yuncheng technical director Li Hongjun came to Xima Village to promote, Li Xuehu understood that Saizhong Pure Land Science and Technology column technology and products have the effect of preventing and controlling heavy stubble (replanting) obstacles, with the mentality of trying to see, 2 bags (40 kg/bag) of Saizhong brand soil conditioner were sprinkled before planting melon seedlings per mu. "I didn't expect the effect to be very good, and the survival rate of the planted melon seedlings reached more than 95%, which was more than 20% higher than in previous years."
During the growth process of melon seedlings, Li Xuehu found that the melon seedlings grew vigorously, and the leaves were thick and green, which was very different from the situation of weak growth, wilting and yellowing in previous years. "You see, now the watermelons have begun to ripen one after another, compared with the watermelons planted by other people in the same village, the melon seedlings in my shed are still thick and green and strong, and the watermelons produced by the melon seedlings are not only large, more than 10 catties, but also have good fur, sugar content, taste and commodity rate have been greatly improved. At present, each acre of land can produce more than 8,000 pounds of watermelons, this is not counting the follow-up maturity, it is expected that this year's 5 acres of melon orchards can produce more than 50,000 pounds of commercial melons, more than 1,000 pounds higher than the output per mu in previous years, not worried about selling at all, melon merchants rush to want, 0.1-0.2 yuan per pound higher than others. Li Xuehu said happily.
According to Miao Zaitian, senior agronomist of Shaanxi Saizhong Biotechnology Co., Ltd., heavy stubble (replanting) obstacles mostly occur in the plots where melons and fruits and other crops are planted all year round. "Crops planted in the same plot for a long time, on the one hand, the medium and trace elements in the soil can be absorbed, resulting in changes in the physical and chemical properties of the soil, soil compaction, acidification, nutrient deficiency and other problems, on the other hand, crops in the growth process will be themselves or absorbed harmful substances and pathogenic bacteria are released into the soil through root exudents, resulting in harmful pathogens, pesticide fertilizer residues and heavy metals exceeded, in the long run, superimposed accumulation, will make the root system of crops infected by diseases, disease, Weakness often manifests itself in plants, with reduced yields, poor yields, and even plant death. Miao Zaitian introduced the causes and origins of heavy crop diseases.
△ Soil pH value in Li Xuehu's melon orchard
"To prevent and control the obstacle of heavy stubble (replanting), we must start with the soil, implement soil purification, conditioning and health care." Miao Zaitian said. According to its introduction, Shaanxi Saizhong Biotechnology Co., Ltd. after nearly 30 years of continuous innovation and exploration, experiments and summed up the use of Saizhong brand soil conditioner to prevent and control heavy stubble (replantation) obstacles and other soil-borne diseases of the national invention patent technology and products, both in the planting of crops will be Saizhong brand soil conditioner sprinkled on the soil after deep ploughing and rotary tillage, not only can effectively supplement the trace elements in the soil, provide sufficient nutrition for the tree, strengthen the plant, enhance the resistance of crops to natural disasters and diseases, It can also adsorb and degrade harmful pathogenic bacteria, root harmful exudates, chemical fertilizers, pesticides and heavy metal residues in the soil, improve the microecological environment in the soil, promote the formation of soil aggregate fruits, and solve the problems of soil compaction, acidification, and nutrient deficiency. After the soil has been purified, repaired and maintained, it has become a "healthy pastoral", and the melons and fruits grown are naturally sweet. Just after measurement, the water-stable soil aggregate in Li Xuehu's melon orchard has reached more than 80%, Ph is 7.0, the acid and alkali are moderate, the cultivated layer is deep, and the watermelon planted is not only sweet, large, good fur, high commodity rate, and the sugar content is 1-2% higher than that of the surrounding watermelon of the same variety, reaching more than 13%. Here, we call on growers to pay attention to soil health in the planting process, scientific farming, precise fertilization, and accurate data to measure soil health, so as to grow high-quality, high-yield and efficient watermelons like Li Xuehu. Miao Zaitian finally appealed.
Agricultural Science and Technology News, China Agricultural Science News Network reporter Hu Haifei