First, the commonly used green manure crop orchard green manure crops should be based on climate, soil, fruit trees and other local conditions. Common orchard green manure: 1, Amorpha fruticosa. Sowing in the spring, the seed amount is 1 to 2 kg per 667 square meters, and it can also be applied in spring. Harvested 2 or 3 times a year for more than 2 years, 1000 to 2000 kg of fresh material can be harvested per 667 square meters. Amorpha fruticosa has strong adaptability, drought tolerance, resistance to salivation, salt and alkali resistance, and can be planted on hillsides, depressions, and ravines. Harvested for many years, the branches and leaves are perishable and have high fertilizer efficiency. 2, mung bean. In spring and summer sowing, 2 kg per 667 square meters. 60 days after sowing, it will be harvested at full flowering stage, and fresh materials can be collected from 1000 to 1500 kilograms per 667 square meters. The year of sowing was harvested that year, and the growth was fast, the yield was high, and perishable; hi-temperature, drought-tolerant, thin-tolerant, and inlerable tolerant; acid soil or saline-alkali soil could be planted. 3. Tian Jing. Sowing in spring and summer, use 3 to 4 kg per 667 square meters. Harvested at the early flowering stage, 1500 kg of fresh material per 667 square meters. Resistant to salamance, salt and alkali resistance, resistance to thin, there is a change of alkalinity function. 4, castor. Spring and summer sowing, with 2 to 3 kg per 667 square meters. 50 days after sowing, it can be harvested, and 2,000 to 3,000 kilograms of fresh material can be collected per 667 square meters. Ramie grows quickly and can be harvested 2 or 3 times. 5, dumplings. In the autumn sowing, 2 to 3 kilograms are used per 667 square meters. In the early summer harvest, 2000 to 2500 kilograms of fresh material can be harvested per 667 square meters. Gardenia plants are short, dense and tender branches, perishable, high efficiency. With a well-developed root system, the effect of sand improvement is good. 6, peas sowing in autumn, with 7 to 10 kg per 667 square meters. In the late spring and early summer, greening can be achieved, and 1,000 to 1,500 kilograms of fresh material can be harvested per 667 square meters. 7. Hey. It can be planted in spring, autumn and summer, harvested once in the year, and harvested 3 to 4 times per year after the second year. Second, the use of orchard green fertilizer 1, overturning. In the same year, the short green manure crops growing in the fruit trees were planted in the soil from the initial flowering stage to the flowering stage, and they were rotted and used as fertilizer. This method is suitable for mature orchards. 2, cut blue. The ditch is buried in the periphery of the canopy, and the ditch width and ditch depth are both 30-40 cm. The length of the ditch is the same as the side of the canopy. The green manure and soil are layered into the ditch, and the soil is filled with water once. This method is suitable for young or large row orchards. 3, cover. The tree tray covers the tree tray with fresh material or is placed between rows of trees for fertilizer. 4, the system. Concentrate the fresh ingredients in the pit and pour it into the orchard. Third, pay attention to matters 1, in the growth phase of green fertilizer to apply the right amount of nitrogen, phosphorus, potassium fertilizer, in order to alleviate the conflict between green manure crops and fruit trees. 2, after the green pressure appropriate irrigation, in order to accelerate decomposition of green manure rot. 3, try to use dwarf or half-grown green fertilizer crops, high stalk green fertilizer crops to harvest in time. 4, sowing perennial green manure crops, 4 to 5 years to plowing and replanting.
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