Study On Discal Cultivated Key Techniques Of Chinese Chive Grown In Organic Substrate In Greenhouse

Effects of variety, length of root remained, planting density and transplanting time on growth, yield and product quality of Chinese chive respectively were studied. The main results were as follows:1. 3cm,6cm and 9cm three length of root remained of'Xuejiu'variety were designed in the experiment. As the length of root remained being increased, pieces, length, average length of new root and plant height of Chinese chive on the sixteenth day after being transplanted gradually increased, plant height, stem diameter, leaf width and pieces of leaf of Chinese chive for the first crop all increased gradually, and stem diameter and leaf width of Chinese chive for the second crop gradually increased, and yield of Chinese chive for the first, the second and the third crop all increased gradually. But as times of Chinese chive gained increasing, yield discrepancy among three treatments gradually decreased.The 6 cm treatment, which was convenient while being transplanted, took root and grew fast, and had relatively high product yield, could be taken as a referenced index.2. Five treatments were designed in the experiment, in which a'Xuejiu'Chinese chive variety was used, which is 4, 5, 6 ,7, 8 plants each fascicle. As planting density increasing, on the whole, plant height, stem diameter and leaf width for the first crop increased firstly and then decreased, while plant height, stem diameter, leaf width and leaf pieces for the second crop decreased, but there were no evidently discrepancy in plant height, stem diameter and leaf pieces between 5 and 6 plants each fascicle.As planting density increasing, yield of Chinese chive for the first, the third and the fourth crop all gradually increased. But Chinese chive lodged badly with 7 and 8 plants each fascicle. 5 and 6 plants each fascicle could be used as reseanable density in the style of culture, Chinese chive with which was outstanding, considering.3. Chinese chive transplanted on September 25, October 10 and October 25 sprouted concurrently, and had a high sprouting rate, the day of sprouting rate≥60% of which was one mostly, and the power of sprouting of which was 100%. Sprouting rate on November 9 and November 24 decreased sharply, the day of sprouting rate≥60% of which increased greatly, and the power of sprouting of which also decreased gradually.'Pingjiuerhao'Chinese chive variety was the best in all of them, considering.As the transplanting time deferring, plant height, length and pieces of new root on the sixteenth day after being transplanted all decreased, while the length and pieces of new root on Nov 24 decreased sharply. And plant height, length and pieces of new root of'Pingjiuerhao'Chinese chive fluctuated limitly.As the transplanting time deferring, plant height and stem diameter of Chinese chive for the first crop increased firstly and then decreased, with leaf width gradually increasing and leaf pieces changing unclearly, but the growth on Nov 24 increased obviously. All of five transplanting times, the growth of'Xuejiu'and'Pingjiuerhao'Chinese chive variety was better than that of'Zigenhong'and'Xindugenhong'.Growth discrepancy of Chinese chive of different transplanting time for the second crop was not obvious. But the growth of'Zigenhong'and'Xindugenhong'was better than that of'Xuejiu'and'Pingjiuerhao'.There was a long dormancy time after the first crop of Chinese chive transplanted before Nov 24, while Chinese chive transplanted on Nov 24 could grow continuously, with no dormancy after the first crop.4. Product quality discrepancy of different transplanting time for the second crop was not obvious, considering. But on the whole, Chinese chive transplanted on Nov 24 had the best quality all of them, so that Nov 24 could be taken as a reasonable transplanting time. And holistic quality of'Pingjiuerhao', the best of four varieties, could be taken as an appropriate planting variety.5. As the transplanting time deferring, yield of'Xuejiu','Zigenhong'and'Xindugenhong'for the first crop decreased gradually, which were transplanted on Sept. 25-Nov 9, while yield of'Pingjiuerhao'was stable relatively, but yield of four Chinese chive varieties on Nov 24 increased distinctly.Yield of Chinese chive transplanted on Sept. 25-Nov 9 for the second crop, discrepancy of which was little, increased more evidently than that of the first crop. The change of yield of the third crop was similar to the second crop, with having quite high yield on Oct 10. But yields of Chinese chive on Nov 24 among the first, second and third crop were stable and high relatively. So the proper transplanting time late or early could increase growth and yeild of Chinese chive and Oct 10 and Nov 24 were the best time in the experiment.Yields of'Pingjiuerhao'Chinese chive for three crops were relatively high and stable among the four varieties, while yields of'Zigenhong'and'Xindugenhong'both were quite high for the second and the third crop.